The Snugpak Silk liner. Whilst not essential, a loose liner is certainly easier to wash than your sleeping bag. We have a full range starting with liners just to keep your bag clean to liners that will enhance the thermal properties of your sleeping bag. Silk - a very poor conductor of heat silk will trap a lot of warmth within the liner making it a very warm liner in a very compact unit. A silk liner is also a must have when travelling in hotter climates - if you use it on its own it will help you feel cooler when it gets too hot to sleep in your sleeping bag. Only available in black. Weight: 150g - £29.99