Designed to keep biting insects and bed bugs away while offering you a really comfortable night s sleep this lifeventure silk sleeping bag liner is lightweight compact and made from 100 silk making it ideal for taking on your next adventure so whether you are using this sleeping bag liner inside your sleeping bag for extra comfort or if you are using it on its own in hotter climates this liner is made from 100 silk so it will keep you warm when it s cold and cool when it s warm the ex triple lay