Sea To SummitReactor Lightweight Liner - Sleeping bag liner

The Reactor Lightweight Liner from Sea To Summit is designed for adventurers seeking optimal comfort. With its stretch knit construction and ingenious armholes, it offers total freedom of movement, no matter your sleeping style. Compatible with all sleeping bags, it easily snaps into Sea To Summit models, making entry and exit a breeze.

This liner makes no compromises on performance. It uses Far Infrared (FIR) technology and hollow-core Thermolite Pro fibers to capture and reflect body heat. The result: a temperature increase of up to 4 °C without adding weight to your gear. Additionally, the HeiQ Fresh anti-odor treatment ensures long-lasting freshness, even after extended use.

Easy to care for and clean, the Reactor Lightweight Liner also protects your sleeping bag by minimizing the need for washes, thus preserving its loft and durability. Designed for outdoor adventures, it is ideal for those looking to enhance their thermal comfort while extending the life of their sleeping bag.

• Lightweight and insulating, Thermolite® Pro technology, with its hollow fibers and infrared-absorbing pigments, optimizes warmth while minimizing bulk.

• Freedom of movement – ​​The stretch knit and contoured arm openings allow for total freedom of movement, providing 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.