The 14 Best Backpacking Sleeping Bags


The 14 best sleeping bags for your hikes

It is your real cozy nest during your hikes and treks, whether in the forest, in the plains, or at altitude. The sleeping bag is, like tents and inflatable mattresses, an essential for your excursions in the great outdoors. Sleeping well after a long day of walking is a sine qua none condition for optimal recovery. Thus, it is extremely important to choose the right sleeping bag before setting off on an adventure. However, it is true that it is possible to get lost through a multitude of choices and characteristics, which can sometimes be relatively difficult to understand. Do not panic ! Through this article, we have selected the 14 best sleeping bags for a mountain trek, so that you can enjoy your bivouacs in the best possible conditions.  

Millet, Ferrino, Sea To Summit, Pajak, Big Agnes, Lafuma, Mountain Hardwear... Discover, without further delay, our selection of the 14 best sleeping bags for a trek

  1. Carinthia Defence 4
  2. Millet Light Down 0°C
  3. Mountain Hardwear Lamina -1°C
  4. Ferrino Lightech 800
  5. Sea to Summit Spark SpI
  6. Thermarest Hyperion 20
  7. Pajak Core 400
  8. Rab Ascent 500
  9. Deuter Orbit 0°C
  10. Nemo Disco 30
  11. Lafuma Nunavut
  12. Marmot Hydrogen
  13. Mountain Equipment Helium 600
  14. Big Agnes Lost Dog 15

Mountain Equipment Sleeping bag

Carinthia Defence 4: your best defence against the cold

Carinthia Defence 4

Without further ado, let us introduce you to the first sleeping bag model from our selection of the 14 best sleeping bags for a trek: the Defence 4, from the brand Carinthia. This 3 season sleeping bag is one of the bestsellers in the range of sleeping bags used by the military, due to its great performance in extreme conditions. The Defence 4 will be a great ally during your cold nights in the mountains. Equipped with a protective flap on the outer side of the zipper, this sleeping bag gives no chance for wind or humidity to interfere with your night in the great outdoors. You will appreciate its Shellproof microfiber outer covering, equipped with a microporous layer which makes the Defence 4 waterproof, guaranteeing dry nights, whatever the external conditions. The inner lining is also equipped with a flap, which folds over the zipper and thus prevents any loss of heat, while its mummy shape and its double-wall construction with G-Loft reinforce its great contribution of warmth, even in extreme temperatures. As for its two-way opening, with anti-pinch zipper, it allows quick and easy extraction, hence its success in military use. Finally, the trapezoidal construction at the level of the feet of the Defence 4, offers you greater ease, but also the possibility of storing personal belongings in complete safety. This Carinthia sleeping bag is therefore ideal for adventurers looking for a high-performance sleeping bag, ready to sacrifice a little lightness! In addition, it is made in Europe (like all Carinthia products), in Moldova more precisely, which is rare enough to be noted!

Find here the different models of sleeping bags from the Carinthia Defence range:

Carinthia Defence 4

Carinthia Defence 6

  • "Sandwich" construction: 2 layers with staggered corrugations to eliminate thermal bridges
  • Integral hood with drawstring
  • Aluminized reflector
  • Zipper central
  • Seasons: 4 seasons
  • Outer fabric: Shellproof 100% polyamide - microfibers with waterproof, breathable and resistant microporous coating
  • Inner fabric: Shelltrans 100% polyamide - breathable microfibers
  • Filling: synthetic
  • G-Loft technology: layer of ultra-hollow polyester fibers 100% non -allergenic
  • Comfort temperature: - 8.8°C
  • Limit temperature: - 15°C
  • Extreme temperature: - 35°C
  • Maximum user height: 185 cm
  • Shoulder width: 83 cm
  • Folded dimensions: 25 x 30 cm
  • Weight of the filling: 1,000 g
  • Compression cover
  • Weight: 2,000 g
  • Public price: £185.00

➤ Sarcophagus sleeping bag - Shop

Millet Light Down 0°: forget about compromises

Millet Light Down 0°

Second choice of our selection of the 14 best sleeping bags for a trek: the Light Down 0° from the Millet brand. The Light Down 0° is designed to accompany you in your bivouacs in the mountains, from spring to autumn, when the temperatures are still cool, but still positive. Indeed, with a comfort temperature limit of 0°C, this sleeping bag will be a safe bet for your spring, summer and autumn bivouacs. This Millet sleeping bag is one of the lightest in our selection, with a weight of only 710 g displayed on the scale! Its filling is composed of 90% down and 10% duck feathers. Thus, the Light Down 0° will keep you warm thanks to its fill power of 700 cuin, which gives this sleeping bag excellent insulation. In addition, you can adjust the hood of the Millet sleeping bag, using a drawstring, which prevents heat loss. In addition, its interior storage will prove very useful if you want to store your personal belongings. Finally, the Light Down 0° sleeping bag also features Millet's K Dry® Down treatment. This treatment makes it hydrophobic so that the down does not absorb moisture. So don't worry about waking up wet with morning dew with the Light Down 0°

Millet Light Down 0°

  • Ultra-light and resistant outer shell, water-repellent Side
  • Zip with internal anti-cold flap / inside pocket
  • Hood with double drawstring
  • Hydrophobic kdry™ duck down filling
  • Filling distribution: 90% down / 10% feathers duck
  • Filling power: 700 Cuin
  • Natural insulation: natural duck down
  • Materials: 20 D 300t ripstop polyester
  • Comfort temperature: 5°C
  • Limit temperature: 0°C
  • Extreme temperature: -16°C
  • Total length: 215 cm
  • Shoulder width: 80 cm
  • Foot width: 45 cm
  • Maximum user height: 185 cm
  • Folded dimensions: 31 x 18 cm
  • Compression bag
  • Compression bag volume: 3.5 L
  • Weight: 710 g
  • Retail price: £229.99

Mountain Hardwear Lamina - 1°C: the advantages of synthetic

Moutain Hardwear Lamina 1°C

The Lamina -1°C, from the Mountain Hardwear brand, does not have to be ashamed of the competition. This sleeping bag specially designed for hiking or trekking offers one of the best compressibility/warmth ratios of our selection. This Mountain Hardwear sleeping bag has one of the best performing synthetic downs on the market, thanks to its innovative Thermal.Q® 60 gram insulation. Indeed, the Lamina -1°C will keep the heat in dry weather as well as in wet weather. In addition, its polyester lining offers incredible softness to the fabric, while the nylon outer coating helps to reject moisture from the sleeping bag. With a comfort temperature of 3°C, you won't have to worry about chilly nights. The Lamina -1°C sleeping bag is therefore perfectly suited for use when camping, hiking with a stopover, or in a refuge. Finally, its relatively small size allows it to be easily transported on a backpack.

Mountain Hardwear Lamina -1°C

  • Shape of the bag: comfortable mummy cut
  • Inflation of the bag: 8 cm
  • Fabric in the body: 30D Nylon Ripstop
  • Insulation: Micro thermal Thermal Q 60 grams
  • Length (regular): 198 cm
  • Width at the hips (regular): 150 cm
  • Shoulder width (regular): 152 cm
  • Foot width (regular): 104 cm
  • Maximum user height: 182 cm
  • Comfort temperature: 3°C
  • Limit temperature: -3°C
  • Extreme temperature: -19°C
  • Weight: 985 g (regular)
  • Public price: £159.95

➤ Rectangular Sleeping Bag  - Shop

Ferrino Lightech 800 : for nights that are as soft as they are restorative

Ferrino Lightech 800

Since a good night's sleep is the best way to recover from your hikes, choosing the Ferrino Lightech 800 might be a good idea. Thus, we have decided to present the Ferrino Lightech 800 to you for its versatility and performance. Indeed, the Ferrino Lightech 800 can be used from spring to autumn weather in a refuge, in a bivouac or under the stars! Opt for a cosy but above all efficient sleeping bag, since its down filling distributed in 80/20, guarantees a very interesting natural insulation. In addition, the filling power of 550 cuin of the sleeping bag will be a good barrier against the cold. The seams between the inner and outer layers are not in contact, in order to avoid heat dispersion. Its so-called sarcophagus shape also allows optimal heat retention, since this sleeping bag remains close to the body. Its comfort temperature being 3°C, the Lightech 800 sleeping bag will be your ideal partner, even during your bivouacs in cool weather! We also appreciate its anti-cold hood and the 3D shape of the lower part, which increase comfort. The Lightech 800 is a safe choice for your sweet nights after your wild expeditions.

Also discover other Ferrino sleeping bag models, from the Lightech range:

➤ Ferrino Lightech 800

➤ Ferrino Lightech 1000

➤ Ferrino Lightech 1200

➤ Ferrino Lightech 1400

  • One touch system to close and open the hood from the inside with just one main
  • Zipper under flap
  • Staggered seams (the seams between the inner and outer layers are never communicating)
  • 2-way side zip and zip in the foot area improving ventilation and comfort
  • Seasons: 3 seasons
  • Anti-cold hood
  • Fill factor: 550 cuin
  • Natural insulation: 300 g duck down padding
  • Exterior: 100% 390T 20D nylon
  • Interior: 100% 390T 20D nylon Comfort
  • Comfort temperature: 3°C
  • Limit temperature : -2°C
  • Extreme temperature: -18°C
  • Length : 215 cm
  • Shoulder width: 80 cm
  • Foot width: 50 cm
  • Maximum user height: 183 cm
  • Dimensions: 215 x 80 x 50 cm
  • Compressed bag dimension: 15 x 27 cm
  • Comes with a compression bag
  • Weight: 760 g
  • Public price: 239.90£

Sea to Summit Spark SPl: the featherweight of our selection

Sea to Summit Spark SpI

Another model from our selection of the 14 best sleeping bags for a trek: the Spark SpI from the Sea to Summit brand. Although this sleeping bag only weighs 340 grams on the scale, it still performs well. Its top quality RDS 850+ Loft goose down filling is indeed very insulating, as evidenced by its 850 cuin fill power. Composed of at least 90% feathers, this sleeping bag offers an excellent weight/warmth ratio for your outdoor activities. As for its top-of-the-range materials, combined with a mummy-shaped design, they guarantee you quality insulation, for nights of perfectly protected bivouacs. As compact as it is extremely lightweight, the Spark SpI model from Sea to Summit features Ultra-Dry Down™ protection, making it an excellent sleeping bag for mountaineers and adventurers who are sensitive to the weight of their sleeping bag, as well as to his performance.

Find below all the Sea to Summit models of the Spark Sp range: 

Sea to Summit Spark SpI

Sea to Summit Spark Spo

Sea to Summit Spark SpII

Sea to Summit Spark SpIII

  • Mummy shape for comfort and efficient insulation
  • Vertical chest dividers that prevent migration and cold spots
  • Horizontal divider on the lower part of the sewn bag to minimize weight
  • Half zip closure with two sliders
  • Seasons: 3 seasons
  • Outer material: 100% nylon
  • Lining: 100% nylon
  • Filling: down goose down (minimum 90% down)
  • Ultra-lightweight 7D fabrics for minimal weight and compact size
  • Premium RDS 850+ Loft Goose Down Ultra-Dry Down™ for maximum insulation
  • Responsible Down Standard label for the responsible treatment of the birds of which is made from down
  • Filling power (Cuin): 850
  • Comfort temperature: 9°C
  • Limit temperature: 5°C
  • Extreme temperature: - 9°C
  • Maximum user height: 198 cm
  • Weight filling: 180 g
  • Internal chest circumference: 150 cm
  • Internal hip circumference: 130 cm
  • Internal foot circumference: 88 cm
  • Folded dimensions: 11 x 23 cm
  • Compressed volume: 1.5 L
  • Transport bag
  • Ultra-Sil ™ compression bag Nano lightweight for compact storage
  • Weight: 340 g
  • Public price: £289.95

➤ Sleeping bags between 0° and 5°

Thermarest Hyperion 20: to lose no ounce of heat

Thermarest Hyperion 20

Sixth choice in our selection of the 14 best sleeping bags for a trek: the Hyperion 20, designed by Thermarest. This new natural down sleeping bag is ideal for accompanying you on your long treks and getting a good night's sleep, even in the great outdoors. Particularly warm thanks to its Nikwax Hydrophobic Down™ down with a fill power of 900 cuin, the Hyperion 20, with its limit temperature of - 6°C, will be perfect for your cold nights in the mountains, while protecting you from humidity. On the other hand, the Hyperion 20 has a mesh interior partitioning, as well as insulation by zone, in order to maximize the warmth and optimize the distribution of the weight of your sleeping bag. As for the materials used for the design of the Hyperion 20, they make it possible to obtain an extremely reduced volume once rolled up, in order to save space in your hiking backpack, and to travel light. Finally, you will appreciate the Hyperion 20 for its Synergy Link™ connectors, allowing you to link your sleeping bag to a mattress, but also for its ergonomic shape and its long zipper, which adjusts perfectly to your morphology. Make your bivouac more comfortable than ever with the Hyperion 20 from Thermarest!

Find below the Hyperion sleeping bags from Thermarest

Thermarest Hyperion 20

Thermarest Hyperion 32

  • Shape: mummy
  • Hydrophobic down Nikwax Hydrophobic Down™: stays drier and maintains its loft 60 times longer than untreated down
  • Down meets the Responsible Down Standard for the responsible treatment of the birds from which it comes  
  • Fill power (cuin): 900
  • Interior partitioning: mesh partitions to maximize loft and minimize cold spots in key areas
  • Ergonomic shape and longer zipper allow it to better adapt to your morphology
  • Synergy Link™ connectors
  • Insulation by zone
  • Length: 201 cm
  • Shoulder width: 145 cm
  • Hip width: 72 cm
  • Maximum user height: 216 cm
  • Comfort temperature: 0°C
  • Limit temperature: - 6°C
  • Extreme temperature: - 23°C
  • Folded dimensions: 15 x 20 cm
  • Weight: 567 g
  • Public price: £439.95

➤Ultralight sleeping bags - Shop

Core 400: down insulation revisited

Pajak Core 400

How not to have a good restful night, when you sleep in the Core 400 from the Polish brand Pajak, designed for a comfort temperature of 0°C, ideal for your adventures summer in the mountains. Indeed, its 700 cuin duck down filling, with a distribution of 95% down and 5% feathers, makes the Core 400 a very effective warmth ally, throughout your nights under the stars. Pajak has also equipped this sleeping bag with a YKK double-zip zipper protected by an anti-cold flap, an enveloping hood with drawstring, but also suspension loops and a generous collar, making this sleeping bag is a model that is as efficient as it is versatile. But what makes the Core 400 from Pajak special is its z-shaped partitioned construction with inclined walls between the different boxes that trap the down, offering much better insulation than a classic H-shaped construction. Finally, you will appreciate the lightness of the Core 400, reinforced by its Duralight Shell envelope, allowing you to take your sleeping bag on all your expeditions, without ever suffering from excessive weight.

Also find all the models in Pajak's Core range below: 

Pajak Core 400

Pajak Core 250

Pajak Core 550

Pajak Core 950

  • Z-shaped construction
  • Double-zip zipper
  • Anti-cold flap along the zipper
  • Protection by velcro closure
  • 3D collar with drawstring
  • Hood adjustable by drawstring
  • Inside pocket
  • Internal and external suspension loops
  • YKK zipper
  • Season: 3 seasons
  • ITW Nexus blocker
  • Main materials: 100% polyamide Duralight Shell
  • Filling : duck down 95/5
  • Factor inflation: 700 cuin
  • Comfort temperature: 0°C
  • Limit temperature: - 6°C
  • Extreme temperature: - 24°C
  • Maximum user height: 205 cm
  • Shoulder width: 84 cm
  • Foot width: 50 cm
  • Compressed volume: 5 L
  • Transport bag and storage
  • Compression bag
  • Filling weight: 410 g
  • Weight: 720 g
  • Public price: £299.00

Rab Ascent 500: compressible as desired

Rab Ascent 500

Other model from our selection of the 14 best sleeping bag for a trek: the Ascent 500 from Rab. Face the cold during your treks with this versatile sleeping bag. Its enlarged mummy shape will bring you real comfort while taking up minimal space. This Rab sleeping bag is made of windproof, durable and warm fabric. These characteristics are essential to provide you with excellent comfort and very good protection during your nights in nature. The Ascent 500 sleeping bag is hand filled with 500g of 650FP duck down. Thus this level of filling will ensure you a feeling of permanent warmth from spring to autumn. Compared to the first three sleeping bags in our selection, the Ascent 500 will be more interesting for temperatures approaching 0°, or even slightly negative.

This sleeping bag from the Rab brand also exists for women:

Rab Ascent 500 - Men

Rab Ascent 500 - Women

  • Wide mummy shape
  • Differential cut proportionally assigned
  • Internal YKK® 3-coil zip pocket
  • Wide foot area for increased comfort
  • Zip YKK length 5 main coil zip with night puller
  • Snag protection
  • Right and left zips available
  • Internal cord and hood
  • Close fitting neck baffle design
  • Trapezoidal baffle chamber design
  • Sloped foot box
  • Filled in Derbyshire UK
  • All Rab products are ethically designed and certified by the Responsible Down standard
  • EN 13537 standard: yes
  • Filling: duck down
  • Bag length: 215 cm
  • Shoulder width: 75 cm
  • Maximum user height: 185 cm
  • Comfort temperature: 1°C
  • Limit Temperature : -4.5°C
  • Extreme temperature: -22°C
  • Compression bag
  • Cotton storage bag
  • Folded dimensions: 31 x 19 cm
  • Weight: 1,040 g
  • Retail price: £269.95

Deuter Orbit 0°: the good compromise

Deuter Orbit 0°

Deuter offers you here a partner of choice for your treks and other adventures! Whether in a tent or in a refuge, with the Orbit 0°, you are not on the wrong track. Comfort and lightness are the two main qualities of this sleeping bag. The Orbit 0° has been designed to withstand cool temperatures, which can be found in spring, as in autumn. Like all sleeping bags in the Orbit range, it can be used everywhere thanks to its Dura-Lite RS outer fabric. The use of High-Loft Hollowfibre synthetic fiber makes it a warm and comfortable sleeping bag. The Poly-Lite Soft interior material, meanwhile, will give you the softness you need to have sweet dreams. In addition, it offers great comfort and good freedom of movement thanks to a raised bag foot. Functional and streamlined, the hood will protect you from the cold thanks to the elastic tightening system, but also with the help of its two drawstrings. Inside the sleeping bag you will find a pocket to store your valuables safely. Finally, when you leave your bivouac, the compressible storage bag will make the Orbit 0° an ultra practical sleeping bag to carry.

Are you looking for a lighter sleeping bag, or on the contrary a warmer one? Here are two other sleeping bag models from the Orbit range, from the Deuter brand:

Deuter Orbit 0°

Deuter Orbit +5°

Deuter Orbit -5°

  • Contoured functional hood with two different elastic anti-pinch cords
  • Double slider YKK for coupling
  • Inside pocket for valuables
  • Can be used as a blanket
  • Shoulder collar with padded closure
  • Material: 50% polyester, 50% nylon
  • Inner fabric: Poly-Lite Soft
  • Outer fabric: Dura-Lite RS
  • Filling: High- Loft Hollowfibre
  • Length: 205 cm
  • Shoulder width: 75 cm
  • Foot width: 48 cm
  • Maximum user height: 185 cm
  • Comfort temperature: > 5°C
  • Limit temperature for use: 0°C
  • Extreme temperature for use: -14°C
  • Folded dimensions: 42 x 19 cm
  • Compressible storage bag
  • Weight: 1,290 g
  • Public price: £110.00

Nemo Disco 30: humidity will no longer be an issue

Nemo Disco 30

The Disco 30 for Men, from the Nemo brand is an interesting sleeping bag for treks and hikes, in wet conditions. It will offer you excellent insulation, while being very comfortable. Its duck down with a fill power of 650 cuin will provide good protection against the cold, from March to December. In addition, the Disco 30 is made of 30 denier ripstop nylon treated to be water repellent (DWR). It thus offers an additional guarantee against humidity. This resistance to humidity will also be increased with the Nikwax® down filling of this Nemo sleeping bag. This technology has the advantage of evacuating water and guaranteeing good insulation even in the event of high humidity. Its spoon shape is innovative, and makes this sleeping bag particularly comfortable. Indeed it is wider at the elbows and knees, which facilitates movement inside the bag, so that you find your ideal position. In addition, the Disco 30 is thermoregulating thanks to Thermo Gills® technology, which allows the warm air present in the down to be expelled, without allowing cold air to penetrate. Finally, the compartment located at the level of the feet is waterproof and breathable, in order to avoid condensation in the tent. It has a large covering hood which is adjustable thanks to its drawstring, but also a pocket for inserting a pillow, as well as a small zipped pocket, located on the top side of the bag. Comfortable and thermoregulating, Nemo's Disco 30 sleeping bag will be a partner of choice for your next wet nights in the great outdoors.

The Nemo brand has also manufactured model 15, from the Disco range:

Nemo Disco 30

Nemo Disco 15

  • Zip: left
  • Material: 30D nylon Ripstop w/ DWR / Down 650
  • Outer fabric: 30D water-repellent Ripstop nylon
  • Inner fabric: 30D nylon Tafettarepellent
  • Foot fabric: 40D nylon Ripstop Osmo
  • Filling: 650 cuin fill Power
  • Nikwax feather
  • Comfort temperature: -1°C
  • Length: 198 cm
  • Shoulder width: 64 cm
  • Waist width: 60 cm
  • Knee width: 64 cm
  • Maximum size of the user: 183 cm
  • Folded dimensions: 47 x 23 cm
  • Folded volume: 5.7 L
  • Weight: 1,002 g
  • Public price: £334.95

Lafuma Nunavut: low-budget but highly effective

Lafuma Nunavut

The Nunavut from the Lafuma brand asserts its place in our selection of the 14 best sleeping bags for a trek. This sleeping bag, as practical as it is comfortable, will be an ideal ally for your next nights under the stars. Very versatile, the Nunavut zips up to the chin when the temperatures drop, but also allows you to take your feet out and fold the top down, once the good weather returns. Warm and cosy, it is ideal for your nights at altitude, whether in a tent or under the stars. Sleeping in a bivouac has never been so comfortable with Nunavut. Its Technowarm® Loft synthetic insulation, combined with the PFC-free water-repellent treatment of the Lafuma sleeping bag, will allow you to face wet conditions without any problem. In addition, thanks to its warm and fluffy lining, you will always stay warm. This Lafuma sleeping bag also has an anti-cold flap, which will keep you insulated from temperatures between 5 and 10°C. As for the problems of zips that block when you raise or lower the closure, they will be solved thanks to the anti-jamming zip of the sleeping bag, which you can easily use at night because of its phosphorescence. Lafuma's Nunavut, equipped with a cover that can be used as a pillow in an instant, will quickly become your partner for many years to come! A safe and quality choice.

The Nunavut also exists in a child version and a double version: 

Lafuma Nunavut

Lafuma Nunavut - kid

Lafuma Nunavut - double

  • Shape: rectangular
  • Double slider zip with phosphorescen puller
  • Anti-jamming zip
  • Anti-cold flap
  • Pillow compartment
  • Main material: P 50D - 100 % polyester
  • Lining: Technowarm® Loft - synthetic fiber - 100% polyester
  • Outer materials: 100% polyester 50D / 30D ripstop
  • Lining: 100% polyester 50D / 30D ripstop
  • Filling: Technowarm® Loft synthetic fiber 170g/m² on top - 100 g/ m² on the underside
  • PFC-free water-repellent treatment
  • Length: 215 cm
  • Shoulder width: 87 cm
  • Comfort temperature: 5°C to 10°C
  • Dimensions folded: 60 x 43 cm
  • Weight: 1,500 g
  • Retail price: £99.99

Marmot Hydrogen : two layers,  for two times as much adaptation

Marmot Hydrogen

If you are looking for the ideal sleeping bag for your adventures in cool weather, which will effectively keep you warm and dry, while keeping your load at a minimum weight, the Hydrogen from Marmot should seduce you. Featuring Pertex® Microlight technology on the outside, and made of 800 cuin high density goose down filling with water-resistant Down Defender treatment, the Hydrogen guarantees you optimal warmth and protection over time. After a long day exploring your favourite playground, rest your feet in the spacious and enveloping space, as warm as it is comfortable, of this sleeping bag. Smooth, curved baffles help keep the Hydrogen's filling in place, while its Nautilus multi-baffle hood with drawstring, snag-free insulated draw tube and full-length two-way zipper with protective slider limit heat loss, for warm nights whatever the outside temperatures. And if you should even get a little too hot, use the fold-down secondary zipper to get some air inside your sleeping bag. Finally, an internal storage pocket allows you to store your small personal effects close to you, in complete safety. So, nothing better than a good night's sleep in the Hydrogen from Marmot, to enjoy a great day of hiking the next day.

This Marmot sleeping bag is also available in a long size:

Marmot Hydrogen

Marmot Hydrogen - Long

  • Placement for the feet designed to provide more warmth
  • Long YKK zipper with two sliders
  • Multi-compartment
  • Nautilus hood
  • Anti-cold collar with drawstring
  • Partitions expandable
  • Storage pocket
  • 2 hooks for hanging the sleeping bag
  • Seasons: 3 seasons
  • Outer material: 100% nylon
  • Lining: 100% 20D Pertex Microlight ripstop nylon
  • PFC-free DWR water-repellent treatment
  • Filling : 90/10 goose down
  • Down Defender impregnation (improves water resistance of down)
  • Fill power (Cuin): 800  
  • Comfort temperature: 2°C
  • Limit temperature: - 3°C
  • Extreme temperature: - 20°C
  • Shoulder width: 160 cm
  • Hip width: 147 cm
  • Foot width:117cm
  • Recommended max height: 198cm
  • Folded dimensions: 30.5 x 15cm
  • Compressed volume: 5.6L
  • Compression and gear storage bags
  • Padding weight: 380g
  • Weight: 770 g
  • Retail price: £359.95

Mountain Equipment Helium 600: for the ones who hate the cold

Mountain Equipment Helium 600

Make your sleeping bag the travel companion you've always dreamed of! For that, don't hesitate any longer, choose the Helium 600, from the Mountain Equipment brand, and make your nights in the great outdoors as pleasant as at home. This sleeping bag, designed to offer you light insulation from spring to autumn, will follow you in all your adventures without weighing you down, thanks to its featherweight of barely 1 kg. And if you fear that this lightness is associated with poor insulation, rest assured, the duck down filling of the Helium 600 guarantees you warmth and insulation, throughout your nights under the stars. Especially since this sleeping bag is also very dense, and thus effectively resists the wind, for minimal heat loss. Equipped with slanted deflectors on the box wall, allowing the weight of the sleeping bag to be reduced, the down is ideally distributed in the Helium 600, for effective insulation. As for the Bulls Eye™ technology located at the level of the foot box, it limits the movement of the down to the bottom of the sleeping bag, always with a view to lightness and compressibility. Sheltered from bad weather and external aggressions, you can sleep soundly with the Helium 600 from Mountain Equipment.

Find below all the models of the Helium range from Mountain Equipement

Mountain Equipment Helium 600 - Men

Mountain Equipment Helium 600 - Women

Mountain Equipment Helium 250 - Men

Mountain Equipment Helium 250 - Women

Mountain Equipment Helium 400 - Men

Mountain Equipment Helium 400 - Women

Mountain Equipment Helium 800 - Men

Mountain Equipment Helium 800 - Women

  • Helium Outside shell, light and ventilated
  • Duck down  90 - 10
  • Fill power : 700 cuin
  • Filling weight : 582 g
  • Seasons : 3 seasons
  • Alpine cut to maximise heat keaping efficency
  • Deflector inclined all around
  • Length : 190 cm
  • Width at the shoulders : 75 cm
  • Width at the feet : 50 cm
  • Max user height : 185 cm
  • Folded dimensions : 26 x 23 x 20 cm
  • Comfort temperature : -1 °C
  • Limit temperature : - 8°C
  • Extreme temperature : - 26°C
  • Waterproof storing bag
  • Storage cube
  • Weight : 1070 g
  • Public price :  £ 369.95 

➤ Rectangular Sleeping Bag - Shop

Big Agnes Lost Dog 15 : to take care of you and the environment

Big Agnes Lost Dog 15

In the Big Agnes family, we had to talk about the Lost Dog 15 ! In refuge or in bivouacs, stay warm all night long thanks to the sleeping bag from the Big Agnes brand. With its synthetic insulation in FireLine and its 100% recycled materials, the Lost Dog 15 takes as much care of you than of your favourite playground : nature. Its spacious and ergonomic sleeping area assures all comfort, mountainous nights! And because a sleeping bag is never too cosy, the Lost Dog 15 is equipped with a system enabling you to slide and block your pillow, but also to grip a mat under your sleeping bag, for nights as nice as at home. But do not worry as its comfort does not in any way limit its compressibility, to store your Lost Dog 15 in your storage bag, and easily put it in your bag. The anti-slip zipper guaranties a quick and fluid closing. Finally, Big Agnes has developed a new hood similar to a vest, enabling a comfortable adjustment, and an optimal protection against elements. Flexible and eco-friendly, the Lost Dog 15 will be your loyal companion during your spring, summer, and fall hike.

You can also take a look at the 0,30 and 45 models of the Lost Dog range : 

Big Agnes Lost Dog 15

Big Agnes Lost Dog 0

Big Agnes Lost Dog 30

Big Agnes Lost Dog 45

  • Rectangular shape
  • Material :  nylon ripstop and waterproof finish
  • Soft and comfortable polyester lining
  • Synthetic Fireline Eco insulation : 100% recycled polyester
  • Fibre offering high resistance, compressibility and a good weight/warmth ratio.
  • Pillow Barn : keep your pillow in the right place
  • Hoody adjustment thread
  • Anti-slip zip
  • Fill weight : 878 g
  • Length : 190 cm
  • Width at the shoulders : 175 cm
  • Width at the feet : 125 cm
  • Max user height : 198 cm
  • Folded dimensions : 20 x 24 cm
  • Comfort temperature : - 9°C
  • Extreme temperature : - 20°C
  • Compressive bag and polyester storage bag
  • Weight : 1 450 g
  • Public price :  £ 199,95 £

Choosing well your sleeping bag : wrapping up of the characteristics

Sleeping bag


Fill power

Comfort/Extreme temperature

Folded dimensions



 Carinthia Defence 4



 -8,8° / -35°

25 x 30 cm

2 000 g

185 £

Millet Light Down 0°


700 cuin

5° / -16°

31 x 18 cm

710 g

229,99 £

Mountain Hardwear Lamina -1°C



3° / -19°

34 x 18 cm

985 g

159,95 £

Ferrino Lightech 800


550 cuin

3° / -18°

27 x 15 cm

760 g

239,90 £

Sea to Summit Spark SpI


850 cuin

9° / -9°

11 x 23 cm

340 g

289,95 £

Thermarest Hyperion 20


900 cuin

0° / -23°

15 x 20 cm

567 g

439,95 £

Pajak Core 400


700 cuin

0° / -24°

38 x 26 cm

720 g

299 £

Rab Ascent 500


650 cuin

1° / -22°

31 x 19 cm

1 040 g

269,95 £

Deuter Orbit 0°



>5° / -14°

42 x 19 cm

1 290 g

110 £

Nemo Disco 30


650 cuin

-1° / -25°

47 x 23 cm

1 002 g

334,95 £

Lafuma Nunavut



5° / 10°

60 x 43 cm

1 500 g

99,99 £

Marmot Hydrogen



2° / -20°

30,5 x 15 cm

770 g

359,95 £

Mountain Equipment Helium 600


700 cuin

-1° / -26°

26 x 23 x 20 cm

1 070 g

369,95 £

Big Agnes Lost Dog 15



-9° / -20°

20 x 24 cm

1 450 g

199,95 £

In this comparative table, we enable you to compare the different essential technical characteristics for a trek. Depending on your adventure, the sleeping bag insulation will be a key data to consider. Furthermore, the folded dimensions are essential information, to make your backpack. The weight is also some precious information depending on the type of trek, the distance, and the length. To finish off, the price will also lead you to a sleeping bag more than another, depending on the budget that you have at your disposal.

➤ Camping & bivvy sleeping bag - Shop

You have some questions or are looking for another model of sleeping bag not presented above? Do not hesitate to leave a comment, or to contact us via our Help Center or by phone on the +33 ( 0 ) 1 84 67 14 24 ( free calls), our Hardguides will be happy to answer your questions !

Photo credits (in the order of appearance): (1) ©Ferrino - (2) ©Mountain Equipment - (3 à 16) ©Hardloop