Sea To SummitReactor Midweight Liner - Sleeping bag liner

Discover total freedom of movement with the Reactor Midweight Liner from Sea To Summit. Thanks to its stretch-knit construction and integrated armholes, this sleeping bag liner adapts to all sleeping positions without any restriction. Compatible with all sleeping bags, it easily attaches to Sea to Summit models, offering simplified entry and exit.

Designed to boost your thermal comfort, the Reactor Midweight Liner uses far infrared (FIR) technology and hollow-core Thermolite Pro fibers. These innovations trap and reflect body heat, increasing the temperature of your sleep system by up to 6°C without adding noticeable weight or bulk.

Easy to maintain, this liner dries quickly and stays fresh thanks to its HeiQ Fresh anti-odor treatment. In addition to enhancing your comfort, it protects your sleeping bag by reducing frequent washes, thus preserving its lifespan. Ideal for adventurers looking to maximize their thermal comfort while extending the life of their gear.

• Enhances sleep system warmth – Thermolite® Pro uses far infrared technology and hollow fibers to trap and reflect body heat without adding thickness.

• Freedom of movement – The stretch-knit and contoured arm openings allow total freedom of movement, for natural comfort throughout your sleep.

• Technical shape and hood – Ergonomic design with a fitted hood for optimal warmth and comfort without unnecessary weight or bulk.