Thermolite Reactor Extreme Sleeping Bag Liner

Constructed of insulating Thermolite® fabric, a hollow-core, breathable fiber that provides extraordinary warmth for its weight Adds up to 25°F of warmth to a sleeping bag; can also be used as a summer ultralight sleeping bag Liner helps keep the inside of your bag clean, saving it from the wear and tear of washings Drawcord hood with mini cordlock cinches around face to hold warmth in Mummy shaped liner features a 3D footbox providing plenty of room for feet