Sea to Summit Thermolite Reactor Liner

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. 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 Color of liner is black Weighs just 8.7oz Packs into its own 3" x 5" sil nylon stuff sack DescriptionWeight Reactor Thermolite® Liner 8.7 oz / 248g