Sleeping Bag Liners

Built with a blend of 70% Coolmax Ecomade (100% recycled) and 30% biobased Tencel Lyocell fibres the Breeze provides stretch comfort and excellent ...

Powered by Thermolite® Pro fabric using an innovative infrared technology, the Reactor Liner provides exceptional warmth, versatility and the free...

The THERMOLITE Reactor Extreme is the warmest backpacking knit sleeping bag liner Sea to Summit offers. The hollow fiber yarns work just like the h...

The luxurious feel of premium AA Grade silk, made even more comfortable by stretch panels running along the main seams; all in a super lightweight,...

The THERMOLITE Reactor liner is Sea to Summit's top seller in the sleeping bag liner range. It's an excellent cold weather option for those who nee...

The Adaptor COOLMAX sleeping bag liner is an excellent versatile choice that adapts to varied temperatures and humidity. It's ideal for use on its ...