Marmot Helium 15° Sleeping Bag - Unisex\'s When weight is key, this ultralight down sleeping bag delivers anatomical comfort and performance even in damp conditions to 15 degrees Remarkably light and compact, the Helium 15° Sleeping Bag - Long delivers impressive insulation during three-season backpacking and mountaineering treks. Featuring Pertex® Microlight on the exterior, its lofty 800-fill-power-down insulation and water-resistant Down Defender treatment will keep you warm and dry. After an epic day on the mountain, give your feet a rest in the roomy wrap-around footbox. Smooth, curved baffles help keep the fill in place, while the nautilus multi-baffle hood with a drawcord, snagless insulated draft tube, and full-length two-way zipper with a zip-guard slider limit heat loss. If the interior gets too warm, use the fold-down secondary zipper to get some air. Tuck small items into the internal stash pocket. Fit Chart: Unisex\'s Sleeping Bags Short - Fits Up To: 5 feet 6 inches /  167.64 cm Regular - Fits Up To: 6 feet 0 inches /  182.88 cm Long - Fits Up To: 6 feet 6 inches /  198.12 cm Features: Pertex® Quantum nylon is designed to protect from wind and improve the efficiency of insulation; shell and lining fabrics are 100% recycled for reduced environmental impact Certified 800-fill-power-down insulation offers lightweight warmth; water-resistant Down Defender finish provides an extra level of moisture protection and retains critical loft of the insulation Main 2-way, full-length zipper with anti-snag slider and insulated draft tube Secundary Fold-Down Second Zipper Provides added Ventilation and Easy Access Anatomically Designed Footbox with Wrap-Around Construction increases Warmth and room for feet Smooth-Curved Baffles Reduce Down Shifting. Nautilus Multi-Baffle Hood limits heat loss Certified 800+ Fill Power Goose Down EN Tested Hand-filled and finished in Rohnert Park, CA, USA ISO tested for temperature rating Ultralight Pertex Quantum 20d 100% Nylon Ripstop DWR 1.03 oz/sqyd Full Length Locking YKK Two Way Zipper with Zip-Guard Slider Down Defender to Improve Water-Resistance in Wet Conditions Nautilus Multi-Baffle Hood Internal Stash Pocket stows small camping gear Snagless Insulated Draft Tube Hood Draw Cord Two Way Zipper Sliders Zipper Garage Stretch Tricot Baffles Two Hang Loops Stuff and Storage Sack Included Activity: Alpine, Hiking Sustainability: PFC-free DWR, Recycled Material, Sustainably Resourced Down Best Use: Alpine/Expedition, Hiking/Backpacking Zipper Location: LZ Technical Specifications: Bag Temperature 15°F / -9°C Tested Rating Comfort: 22.6°F / -5.2°C Tested Rating Limit: 10.4°F / -12°C Tested Rating Extreme: -23.8°F / -31°C Product Weight: 2lbs 4.5oz / 1040g Main Fabric: Pertex 20d 100% Nylon R/S 1.03oz/yd Lining Fabric: 30d 100% Nylon DWR 1.09 oz/yd Insulation Type: Down Insulation Material: 800+ Fill Power Goose Down Packed Size: 7 x 14 in / 17.8 x 35.6 cm Zipper Location: LZ Shape: Mummy Shoulder Girth: 63in / 160cm Hip Girth: 58in / 147cm Footbox Size: 41in / 117cm Includes Stuff Sack: Yes Stuff Sack Size: 7 x 14in / 17.8 x 35.6cm Includes Storage Sack: No Includes Compression Stuff Sack: No Compressed Volume: 457.7ci / 7.5 liters Stash Pocket: No Pack Volume: 457.7ci / 7.5 liters Style Number: 23230