Sea to Summit Reactor Thermolite Sleeping Bag Liner
Our best selling sleeping bag liner! The “Reactor” is made from the lightest weight Thermolite, that DuPont has yet approved. Thermolite is a hollow core fiber that provides extraordinary warmth for its weight and remains extremely breathable. Adds up to 15 degrees of warmth to a sleeping bag or, used alone, is the ideal warm weather bag.