product description

Our collection of thermal boosting liners offers added warmth to bring you comfortable sleeps in cool climates. Made from premium fabrics and using cutting edge technology, pair this collection with our sleeping bags to create a cosy and comfortable sleep system suited to cold and arctic conditions.

 With a mummy shape and Thermolite® Pro fabric, the regular Reactor Extreme Liner featuring a drawcord uses new infrared technology paired with comfortable stretch fabric to add warmth, versatility, and increased insulation. The Reactor Extreme feature offers additional heat retention best suited to cold conditions.

SUSTAINABILITY: Fabric is made from 50% recycled yarns

YARN 1: 50% Thermolite® Pro Yarn

YARN 2: 50% Thermolite® EcoMade yarn: Fiber made with 100% recycled resources.

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 fibers 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 odor control technology that uses a bio-based Amino Sugar Polymer to neutralise body odour.