Description of Marmot Couloir Gossamer Long Sleeping Bag Drop into the Couloir for extra added temperature insurance. Marmot's consummate all-arounder, the Couloir withstands winter outings and excels in any outdoor, overnight activity. Features: Weight: 3lb 3 ozs / 1445 g Shell material: Plexus N-100R Lining: Omni N-140 Insulation: 800 Fill Goose Down Size for stature: 183 cm Size on shoulder: 163 cm Size on hip: 152 cm Size on foot: 107 cm Certified 800+ Fill Goose Down independently tested and certified by International Down and Feather Laboratory in Salt Lake City, Utah. Retested at fill time in Santa Rosa to ensure 800 fill power every time. If the down does not meet our in house test, we send it back. Lightweight 20d Nylon shell with Silicon DWR Thermo-Pane foot box double layer baffle construction for increased warmth in foot area Forward lean foot box Countoured zipper Stuff sack and storage sack included Durability: Stretch tricot baffles provide ultimate strength, durability and bag life. Functionality: Hidden draft tube pocket inverts into draft tube and used to store watch or alarm and stay out of our face "Feely" draw cords ease night time cord fumbling Zipper guards help repel biting zipper coils Velcro®-free face muff keeps the drawcord and zipper away from your face Comfort: Nautilus 6-baffle hood 6 chambers of down around head for better down control and fit, hood cord is positioned for easy access Classic trapezoidal foot box for more foot room Down-filled collar with easy access draw cord engineered to close without Velcro®, keeps warm air trapped in your bag Ground-level side seams eliminates drafts Down-filled draft tube eliminates cold leaks through the zipper Ideal Uses: Backpacking / Hiking Mountaineering