Free shipping on 100 €

Free return under 100 days

Expert Help

Schedule an appointment

+33 1 84 67 14 24

Login

My account

Kids
Kids' Outdoor Clothing
Kids' Baselayers

Kids' Baselayers

(111)

Sort by

111 Results

Filter

Outdoor jackets

Outdoor caps & hats

Gloves & mittens

Pullover & Hoodies

Kids

CMP

Columbia

Craft

Devold

Helly Hansen

icebreaker

Maier Sports

Odlo

Poc

Protest

Reima

Smartwool

Trollkids

Skiing

Ski Touring

Trekking

Mountaineering

Skiing

Cross Country Skiing

0€ - 25€

25€ - 50€

50€ - 75€

75€ - 100€

150€ - 200€

No

Yes

20% - 30%

30% - 40%

40% - 50%

Oeko-Tex

Fair Wear Foundation

PFC-Free

ZQ Merino

Origine Européenne Garantie

Bluesign™

Long

Top base layer

Base layers

Bottom base layer

Thermolite®

ZeroScent

Total Easy Care

Sort by

ColumbiaChill River Hoodie - Base layer - Kid's39,90 €

DevoldBreeze Merino Sleepsuit Baby - Merino base layer - Kid's69,90 €

DevoldBreeze Merino Body Baby - Merino base layer - Kid's44,90 €

DevoldBreeze Merino Longs Baby - Merino base layer - Kid's34,90 €

DevoldBreeze Merino Sleepsuit Baby - Merino base layer - Kid's69,90 €

DevoldBreeze Merino Longs Baby - Merino base layer - Kid's34,90 €

DevoldBreeze Merino Body Baby - Merino base layer - Kid's44,90 €

DevoldBreeze Merino Sleepsuit Baby - Merino base layer - Kid's69,90 €

DevoldBreeze Merino Longs Kid - Merino wool Thermal Tight - Kid's49,90 €

DevoldBreeze Merino Longs Jr - Merino wool Thermal Tight - Kid's54,90 €

DevoldBreeze Merino Longs Kid - Merino wool Thermal Tight - Kid's49,90 €

DevoldBreeze Merino Longs Jr - Merino wool Thermal Tight - Kid's54,90 €

CMPSeamless kid's unisex base layer round neck top - Base layer - Kid's25,90 €

CMPUnisex kids seamless base layer pants and jersey set - Underwear - Kid's49,90 €

CMPKids seamless base layer tights - Base layer - Kid's25,90 €

CMPSeamless kid's unisex base layer round neck top - Base layer - Kid's25,90 €

CMPKids seamless base layer tights - Base layer - Kid's25,90 €

CMPUnisex kid's base layer - Base layer - Kid's19,90 €

CMPUnisex kid's base layer pant - Base layer - Kid's19,90 €

CMPUnisex kid's base layer - Base layer - Kid's19,90 €

CMPUnisex kid's base layer pant - Base layer - Kid's19,90 €

DevoldDuo Active Merino Longs Jr - Merino wool Thermal Tight - Kid's49,90 €

DevoldDuo Active Merino Shirt Kid - Merino Wool Jersey - Kid's44,90 €

DevoldDuo Active Merino Longs Kid - Merino wool Thermal Tight - Kid's44,90 €

DevoldDuo Active Merino Zip Neck Jr - Merino Wool Jersey - Kid's59,90 €

DevoldDuo Active Merino Longs Jr - Merino wool Thermal Tight - Kid's49,90 €

DevoldDuo Active Merino Zip Neck Jr - Merino Wool Jersey - Kid's59,90 €

DevoldDuo Active Merino Shirt Kid - Merino Wool Jersey - Kid's44,90 €

Maier SportsKim - Base layer - Kid's44,90 €

Maier SportsKim - Base layer - Kid's44,90 €

Maier SportsKim - Base layer - Kid's44,90 €

Maier SportsKim - Base layer - Kid's49,90 €

DevoldDuo Active Merino Longs Baby - Merino wool Thermal Tight - Kid's29,90 €

DevoldDuo Active Merino Longs Baby - Merino wool Thermal Tight - Kid's29,90 €

DevoldLitleegga Merino Longs Kid - Merino wool Thermal Tight - Kid's59,90 €

icebreaker200 Oasis LS Crewe - Merino base layer - Kid's55,90 €

icebreaker200 Oasis Leggings - Merino base layer - Kid's49,90 €

icebreaker200 Oasis LS Crewe - Merino base layer - Kid's49,90 €

DevoldBreeze Merino Body Baby - Merino base layer - Kid's44,90 €

DevoldBreeze Merino Longs Baby - Merino base layer - Kid's34,90 €

icebreaker200 Oasis LS Crewe - Merino base layer - Kid's49,90 €

icebreaker200 Oasis Leggings - Merino base layer - Kid's49,90 €

Helly HansenGraphic Lifa Merino Set - Merino base layer - Kid's

Helly HansenGraphic Lifa Merino Set - Merino base layer - Kid's

Helly HansenGraphic Lifa Merino Set - Merino base layer - Kid's

Helly HansenJr Lifa Merino Midweight Set - Merino base layer - Kid's

Helly HansenJr Lifa Merino Midweight Set - Merino base layer - Kid's

icebreaker200 Oasis Leggings - Merino base layer - Kid's

icebreaker200 Oasis Leggings - Merino base layer - Kid's

PocResistance Layer Tights JR - Base layer - Kid's

SmartwoolKids' Classic Thermal Merino Base Layer Bottom - Merino wool Thermal Tight - Kid's

1
2

Our top brands

Patagonia Ortovox Rab La Sortiva Lowa Altra Millet Moon Boot Helly Hansen Barbour Fjällräven Columbia Scarpa Vaude Mammut Julbo New Balance Hanwag Birkenstock Petzl

Our top trending categories

Women's Down jackets Women's Parkas Women's Fleece jackets Men's Down jackets Men's Parkas Men's Fleece jackets Tents Sleeping pads Headlamps Sleeping bags Stoves Hiking backpacks Ice axes Hiking shoes & boots Trail running shoes Running shoes Climbing shoes Kids' Hiking shoes & boots Cycling helmets Kids' carriers Kids' Clothing Kids' Fleece jackets Aigle Kids' Rain shoes Patagonia Fleece jackets Pyrenex Down jackets Helly Hansen Jackets Columbia Fleece jackets Black Diamond Headlamps Meindl Shoes Dakine Backpacks Assos Cycling shorts Giro Helmets Rab Down jackets Dog Harnesses Dog Leads & Leashes Ortlieb Panniers Altra Shoes Buff Neckwear Abus Cycling helmets Patagonia Down Jackets

Need Help?

To choose your waterproof jacket, your trail shoes or to modify an order, contact our HardGuides!

Write to us!

Keep in touch

Be the first to discover our new products, exclusive sales, adventure ideas & tips, and get £5 off your first order

E-mail adress

Our mission

At Hardloop, we believe that nature and being on the move should be at the very heart of our lives. Whether you're a first-timer or a top athlete, since 2015 we've been sharing with you our love of good gear and our passion for the steep trails we love to run around on.

Read more +

Customer Service

Track my order
Size Charts & Fit Guide

Hardloop

Who are we?
HardGuides

Carbon neutral since 2015

Our Footprint
Carbon neutrality
HardGreen selection

Logistics partner

100% secured payment system

Easy Online Shopping

Free delivery from 100 €
100 Days refund policy

© Hardloop 2026
Legal Notice
Terms of Use
Privacy Policy & Data Tracking
Data preferences

More adventures

Hardloop International