Reactor Extreme Thermolite Liner

Professor Wanderlust says, “Packability + Warmth = Thermolite”. Hollow core, Thermolite fabric provides ultimate warmth with minimum weight. The mummy shape fits snugly inside your cool weather bag and provides up to an additional 25F (14C) of warmth to your sleeping system.

Warmth: Adds up to 25°F / 15°C of warmth to a sleeping bag.
Dimensions: 6’10″x 36″ (L x W at top)
Weight: 14 oz (399 g)

Stretchy, Thermolite® fabric is incredibly comfortable.
Works like your favorite cold-weather base layer to trap insulating air and increase warmth.
Machine wash and air dry – Avoid fabric softeners & dryer sheets to maintain wicking performance.
Packs into its own Ultra-Sil™ 6.5″ x 4.5″ stuff sack.
Mummy shape with a box foot.
Draw cord hood