The THERMOLITE REACTOR is a surprisingly warm bag sheet. It belongs to the range of bag sheets. This model is much more than just a sheet as itincreases the temperature of a sleeping bag by 8C.

Replacing the fleece bag, while offering a much more compact size, this sheet is ideal for adventurers who sleep in cold temperatures. Thanks to Thermolite Reactor technology, a fabric made from the lightest of Thermolite fibres, this sheet provides unrivalled thermal comfort.
With an ergonomic mummy shape for maximum leg warmth retention, this sheet can even be used as an outer bag on hot nights.
It is machine washable and compacts into its own Ultra Sil bag.