Marmot Helium Sleeping Bag Sweet Dreams Are Made of These The Helium Sleeping Bag keeps your pack weight low without sacrificing comfort. Filled with lofty, responsibly sourced down, it's perfect for thru-hikers and backpackers chasing long miles and chilly alpine mornings. Its slim mummy shape traps heat efficiently without feeling too tight, and a snug hood and insulated draft tube lock out cold air. A water-resistant treatment on the down helps it stay lofty even if some moisture sneaks in. You'll stay asleep all night and dream of the next day of adventures. Features Insulated with 800-fill-power down, lightweight and super warm Water-resistant down treatment, helps maintain loft if it gets damp Snug hood and insulated draft tube, seal in heat on cold nights Full-length zipper with two sliders, for venting options Exterior pocket, keeps small essentials handy Includes stuff sack and storage bag, keeps it compact on trail and lofted at home MFG#: M14405-19621-LZSPECIFICATIONSIntended Use Backpacking, Camping Temperature Rating Comfort: 27deg F / -3deg C, Limit: 15degF / -9degC, Extreme: 16deg F / -9deg CSeason3 Season Fill800 Fill Power Goose Down (RDS certified)Shell / Lining Material Recycled Nylon Ripstop Shape Unisex - Mummy Weight2 lbs 6 oz / 1. 07 kg Packed Size14. 2" x 7. 1"Zipper Left Included Storage Sack, Stuff Sack SIZINGSize / Max User Height Girth (Shoulder/Hip/Foot)Long / 6'6"63" / 58" / 41" | Marmot | Helium Down 15 Sleeping Bag | Nylon