Sea to Summit Reactor Lightweight Liner Travel pillow

The Sea to Summit Reactor Lightweight Liner is an ultralight sleeping bag liner designed to boost warmth without adding bulk. Using advanced Thermolite® Pro fabric with hollow-core fibres and infrared-absorbing ceramic pigments, it traps body heat to add up to 4 °C | 7 °F of extra warmth. Stretch-knit fabric and articulated arm openings allow unrestricted movement for natural comfort throughout the night. Treated with HeiQ Fresh for odour control and quick drying, it’s machine washable and helps extend your sleeping bag’s lifespan. Perfect for ultralight backpacking, mountaineering, and cold-weather expeditions.

Lightweight and insulating, Thermolite Pro technology with hollow fibres and infrared absorbing pigments improves heat with minimal bulk FREEDOM OF MOVEMENT - Stretchy knit and contoured arm openings allow for unrestricted movement, providing natural comfort throughout your sleep TECHNICAL SHAPE AND HOOD - Ergonomic design with a fitted hood provides optimal warmth and comfort without extra weight or bulk FITS ANY SLEEPING BAG - Stretch fabric means the Reactor Liner fits all shapes of sleeping bag STAY FRESH LONGER - HeiQ Fresh odor control technology keeps liner fresh after extended use