The Reactor is made from Thermolite®, a hollow core fiber that provides extraordinary warmth for its weight and remains extremely breathable. Adds up to 15 degrees F / 8 degrees C of warmth to a sleeping bag or, used alone, is the ideal warm weather bag.

Features

*Lighter weight, more packable than fleece
*Adds up to 15 degrees F / 8 degrees C of warmth to a sleeping bag
*Mummy shape with a box foot
*Draw cord hood with mini cord lock
*Packs into its own 3 in x 5 in sil nylon stuff sack