Price: £47.99 inc vat
The Thermolite Reactor Liner Extreme increases sleeping bag performance by up to 14°C (25°F) with super-insulating Thermolite® fabric. Thermolite® is a hollow core fiber that provides extraordinary warmth for its weight.
Price: £37.95 inc vat
The Sea to Summit Thermolite Reactor Liner has a stretchy knit fabric that increases sleeping bag warmth by up to 8°C