The Marmot Helium 15 Sleeping Bag will keep you nice and toasty throughout the majority of the year (I’d call this bad boy a 3+ season bag). The Helium 15 is filled with 610 grams of primo, certified 850+ goose down in Marmot’s Santa Rosa, CA facility and is pretty light for a 15 degree sleeping bag, weighing in at 2 pounds 2.6 ounces. The Nautilus hood features six baffles, forming a 3D hood with the same warmth and comfort found on Marmot’s 8000m Jacket. Marmot incorporated a hood muff to keep cold air out and keep the hood draw cord from scratching that pretty face of yours. The Marmot Helium 15 Sleeping bag boasts many of the features Marmot sleeping bags are known for: an overstuffed, insulated draft tube, zipper guards, both a stuff and storage sack and their classic trapezoidal foot box, which offers tons of room for even Shaq-sized feet. If you’re a cold sleeper, you’ll appreciate the extra warmth this bag offers while out on Spring/Fall trips, and, if you’re a warm sleeper, you’ll find this bag can get you through some quick, early Winter trips. This Marmot down sleeping bag is a favorite for backpackers and mountaineers alike. Get one. Now.

DECENT FEATURES of the Marmot Helium 15 Degree Sleeping Bag

• Filled and Finished in Santa Rosa, California
• Certified 850+ Fill Power Goose Down
• EN Tested
• Pertex Microlight Shell and Lining Fabric
• Passive Collar
• Nautilus 6-Baffle Hood
• Classic Trapezoidal Foot Box
• Stretch Tricot Baffles
• Full Length Zipper
• Zipper Garage
• Hood Draw Cord
• Insulated Draft Tube
• Stuff and Storage Sack Included
• Velcro-free Face Muff
• Zipper Guards

The SPECS

• Temperature Rating: 15° F / -9° C
• EN Tested Comfort: 27.7° F / -2.4° C
• EN Tested Lower Limit: 16.3° F / -8.7° C
• EN Tested Extreme: -16.6° F / -27° C
• Zip Option: Left Zip
• Fill: 850+ Fill Power Goose Down
• Insulation: 850+ Fill Power Goose Down
• Lining: 20 Denier 100% Recycled Polyester Mini Ripstop DWR 1.0 oz/yd
• 20 Denier 100% Nylon Mini Ripstop DWR 1.1 oz/yd

• Weight: 2 lbs 2.6 oz / 981 g
• Length: 6'0"

• Weight: 2 lbs 6 oz / 1077 g