Sea to Summit Reactor Extreme Sleeping Bag Liner - Thermolite Pro Fabric, Infrared-Absorbing Warmth, Stretch-Knit, Drawcord Footbox - Cold Weather Thermal Boost

From Ridge & River

Elevate your cold-weather sleep system with the Sea to Summit Reactor Extreme Sleeping Bag Liner the ultimate solution for enhancing warmth and comfort on chilly nights outdoors. Engineered with Thermolite Pro fabric this liner incorporates infrared-absorbing ceramic pigments that reflect your body heat back to you increasing the thermal efficiency of your sleeping bag setup-perfect for alpine conditions shoulder-season backpacking or lightweight winter camping. The stretch-knit construction delivers a soft wicking and body-hugging fit that moves with you for unrestricted comfort through the night.