Sea to Summit Reactor Thermolite Mummy Bag Liner

Introducing the Reactor® Thermolite Mummy Liner--the first to use Thermolite® from Dupont. Thermolite is a hollow-core fiber that provides extraordinary warmth for its weight and remains extremely breathable. It's very comfortable, more compact and warmer for its weight than fleece liners. Adds up to 15 degrees of warmth to a sleeping bag, or can be used on its own as the ideal warm-weather bag. Thin drawcord with tiny cord-lock around the hood. Very light and compact!