The Sea to Summit 100% Premium Silk Sleeping Bag Liner brings the silky, soft comfort whether you're camping, backpacking, or traveling from hotel to hotel. Premium -grade ripstop silk keeps you unbelievably comfortable for how durable it is, and gussets allow this liner to move with every toss and turn. Sea to Summit reinforced the seams for excellent longevity so this liner can protect you from the disgusting germs in hotel beds for a long time, and you can toss it in the washing machine for an easy clean when you get home.