Sustainable design that doesn't sacrifice performance in cold weather around 30degF. The PFC-free, mummy-style Trestles Elite Eco 30 Long Sleeping Bag fill is made from 96% recycled material and has the lightweight, easy compressibility of the original. HL-ElixR Eco Micro synthetic insulation uses a unique blend of three fibers for maximum warmth, soft feel, and high loft. Wave and blanket construction plus a roomy footbox provide optimal warmth and comfort. A fold-down secondary zipper offers ventilation and easy access. Fold-Down Second Zipper Provides added Ventilation and Easy Access, Main Zipper Anti-Snag Slider reduces Snagging. Anatomically 3D Footbox increases the insulation and room for your feet, for more Warmth and Comfort. HL-ElixR ECO Unique Blend of 100% Recycled Fibers Provides Maximum Warmth, Soft Feel and High Loft. EN Tested. Combination Wave Construction Top provides Maximum Loft and Warmth, Blanket Construction Bottom for the best warmth and comfort under body. 3D Hood Construction. External Stash Pocket. Snagless Insulated Draft Tube. Two Hang Loops. Compression Stuff Sack. Storage Bag. Sustainability: Made from Recycled Materials. Stuff / Compression Sack Dimensions: 7.5 x 16 in.. Fabric Details: 20D 100% Recycled Polyester Ripstop. Bag Weight (Long): 2 lbs 3 oz. Extreme Temperature Rating: -1.3 Degrees Fahrenheit. Sleeping Bag Lining: 40D 100% Nylon. Fill Weight (Long): 18.8 oz. Max User Height (Long): 87 in.. Foot Circumference (Long): 48 in.. Shoulder Circumference (Long): 64 in.. Hip Circumference (Long): 59 in.. Best Use: Climbing, Camping, Mountaineering and Alpine. Insulation: Synthetic. Temperature Rating: 21 - 30 Degrees Fahrenheit. Exact Temperature Rating: 30 Degrees Fahrenheit.