Luxurious silk is blended with soft Egyptian cotton in the Cocoon Silk Egyptian Cotton MummyLiner. The result is an exquisite and durable 55% silk 45% Egyptian cotton blend that is slightly heavier and stronger than pure silk. Just like silk it responds well to changing temperatures, is compact, and soft on your skin. Premium quality 55% silk, 45% Egyptian cotton blend fabric. Slightly heavier and stronger than pure silk. Packs compactly. Soft against your skin. Adds up to 8.6F of warmth. Keeps your sleeping bag clean. Great for travel. Wt. 6.3 oz. Size: 95 x 35 22 in.