Sea to Summit 100% Premium Silk Liner (Long Rectangular 82" x 36") - Navy Blue Adds up to 10 degrees of warmth AA Grade, 10-Momy ripstop silk. Lightweight, super compact Machine washable & colorfast. Packaged in its own stuff sack Double folded seams Standard - 4.6oz; Traveler - 6oz; Mummy - 4.8oz; Long - 5oz; Double 9oz