Marmot Trestles 30 Mummy Sleeping Bag, 30-Degree Rating Mummy-style 30-degree sleeping bag for backpacking and other outdoor activities; featuring SpiraFil high-loft insulation for maximum warmth and durability EN tested to provide a comfortable nights sleep at temperatures as low as 30F Anatomically shaped footbox for more wiggle room and less heat buildup Weight: 3 lbs., 1 oz.; pack volume: 640.7ci (10.5 liters) 70D 100% polyester, 2.2 oz/yd; 70D 100% embossed polyester, 2.2 oz/yd