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.

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

Features:

Warm and Cosy

Drawcord allows the footbox to be open or closed allowing more temperature control and comfort.

Thermal Boost +7% for a 3 Season Sleeping Bag

Thermal Boost +15% for 1 Season Sleeping Bag

50% Thermolite Pro Yarn, 50% Thermolite EcoMade yarn: Fibre made with 100% recycled resources

Tested in accordance with ASTM D1518-2014

Max User Height: 177cm

Weight: Approx. 342g

Please Note: 

**** We are unable to accept returns of sleeping bag liners for obvious hygiene reasons unless faulty.

All details are in the listing, so please do NOT buy these if you are unsure of suitability. ****