Description of Sea to Summit 100% Premium Silk Liner Standard Sea to Summit makes their premium silk traveling sheets from the strongest, finest ripstop silk available. Perfect for keeping a sleeping bag clean and for hostel or budget hotel traveling. Features: Adds up to 10 degrees of warmth Traveler model has built in pillow case AA Grade, 10-Momy ripstop silk Machine washable & colorfast Traveler model is Hostel Approved Lightweight, super compact Packaged in its own stuff sack Double folded seams Silk Standard (Rectangular) 73” x 36” 4.6 oz