Snugpak Silk Sleeping Bag LinerSoft to the touch and extremely efficient at retaining heat and wicking away moisture the Snugpak Silk Liner provides a luxurious feel to your sleeping bag. The silk cotton mix fabric is excellent at managing temperature keeping you warm in colder climates and cool in more tropical hotter environments. Compact and lightweight, the silk liner fits neatly into your sleeping bag with tie in loops to fix onto the inside of your Snugpak sleeping bag