The Reactor is made from 80g/m² THERMOLITE®—the lightest weight THERMOLITE® fabric available. THERMOLITE® is a hollow core fibre that provides amazing warmth for its weight and remains extremely breathable. The Reactor adds up to 8°C of warmth to your sleeping bag or can be used alone as a warm weather bag.
Lighter weight, more packable than fleece
Mummy shape with a box foot
Drawcord hood with mini cord lock
Extends life of sleeping bags by keeping them clean
Contrasting colour along the top edge makes it easier to find the opening