Sea to Summit Reactor Plus Compact Thermolite Mummy Liner
Increases sleeping bag performance by up to 20F (11C) with dual-weight Thermolite fabric. Sea to Summit's regular 80 g/m is combined with panels of 110g/m Thermolite in the core body and foot bed areas adding extra warmth where most needed. The compact, shorter design shaves off excess weight while giving maximum warmth for torso and feet.