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The THERMOLITE® Reactor liner is our top selling and lightest thermal sleeping bag liner.
The THERMOLITE® Reactor™ Extreme liner is Sea to Summit’s warmest knitted sleeping bag liner.
The Silk-Cotton Blend Travel sleeping bag liner is a practical option that uses two natural fibers blended together for premium comfort and performance.
The Expander sleeping bag liner is made of a super soft and stretchy knitted poly-cotton material.
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, easy-care compact package.
The THERMOLITE® Reactor Fleece liner is Sea to Summit’s warmest sleeping bag liner.
The Adaptor COOLMAX® sleeping bag liner will help you adapt to varying temperatures and humidity.
This sleeping bag liner can save your life. Even the best down or synthetic filled sleeping bag will accumulate humidity on extended expeditions in arctic conditions, reducing its insulating properties.