With a mummy shape and Thermolite® Pro fabric, the Sea to Summit Extreme Reactor Liner uses new infrared technology paired with comfortable stretch fabric to provide extra warmth, and increased insulation. A drawcord offers added flexibility for premium comfort. Best suited to cold conditions.
Thermolite Pro has engineered hollow fibres like standard Thermolite but with the addition of permanent ceramic pigments that absorb the body's infrared rays and reflect them back to the wearer.
The recycled Thermolite EcoMade fibres are made from 100% textile waste, are GRS-certified, and offer the same quality and durable lightweight warmth as their polymer virgin counterparts but with a lower carbon footprint.
Sea to Summit Liners are treated with HeiQ Fresh FFL, a biocide-free, highly effective odour control technology that uses a bio-based Amino Sugar Polymer to neutralise body odour.
Stuff sack included.
Fabric is made from 50% recycled yarns: 50% Thermolite Pro Yarn, 50% Thermolite Eco (100% recycled).
Thermal Boost: +7% 3-Season Sleeping Bag, +15% 1-Season Sleeping Bag, Tested in accordance with ASTM D1518-2014.