The versatile Cocoon Dual Liner combines cool, lightweight ripstop silk on one side and warm, stretchy Thermolite fabric on the other. The combination of Cocoons lighest weight and warmest materials creates a liner that adjusts to various temperatures. Use ripstop silk on top for warm premium quality nights and turn the liner over to enjoy the warmth of Thermolite in cold weather. Pillow pockets on both sides. Rectangular TravelSheet has short side opening without Velcro fastener closure. Adds up to 11.7 to the temperature rating of your sleeping bag. Great for camp or travel. Lightweight ripstop silk on one side, stretchy Thermolite on the other. TravelSheet Rectangular Dual Liner Size: 86.5 x 34.5 in., Wt. 12.3 oz. Mummy Dual Liner Size: 86.5 x 34.2 in., Wt. 10.1 oz.