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Marmot Helium 15 Sleeping Bag - Men's · Cobalt Blue/Blue Night

Marmot Helium 15 Sleeping Bag - Men's · Cobalt Blue/Blue Night

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Product details
Official manufacturer description

When weight is key, this ultralight down sleeping bag delivers anatomical comfort and performance even in damp conditions to 15 degrees


  • Fold-Down Second Zipper Provides added Ventilation and Easy Access, Main Zipper Anti-Snag Slider reduces Snagging
  • Anatomically Designed Footbox with Wrap-Around Construction increases Warmth
  • Smooth-Curved Baffles Reduce Down Shifting. Nautilus Multi-Baffle Hood limits heat loss
  • Filled and Finished in Rohnert Park, California
  • Certified 800+ Fill Power Goose Down
  • Ultralight Pertex Quantum 20d 100% Nylon Ripstop DWR 1.03 oz/sqyd
  • EN Tested
  • 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
  • Snagless Insulated Draft Tube
  • Hood Draw Cord
  • Two Way Zipper Sliders
  • Zipper Garage
  • Stretch Tricot Baffles
  • Two Hang Loops
  • Stuff and Storage Sack Included
Age Group
Cobalt Blue/Blue Night
Fill type
Fits up to
72 in
Hip girth
56 in
Down defender, Goose Down
Intended use
Camping, Backpacking
Is ultralight
Pertex 20d 100% Nylon R/S 1.03oz/yd
Shoulder girth
61 in
Sleeping bag weight
2 lbs 1 oz
Sleeping capacity
Stuff sack size
14.2 x 7.1 in
Stuff sack size
14.2 x 7.1 in
Temperature rating
15° F
Tested comfort
22° F
Tested lower limit
10° F
2lb. 4.5oz
Zipper Location
Marmot Helium 15 Sleeping Bag - Men's · Cobalt Blue/Blue Night
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Top reviews
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Maicen Stuart
Maicen Stuart
Verified camping & hiking expert
Reviewed Jul 13, 2022

This sleeping bag is great for almost any backpacking expedition. It's extremely comfortable and durable. It has a relatively low degree rating, at 15 degrees, which is perfect for those looking for some versatility. It's also super light and compactable which is great for backpackers.

Benjamin Phan
Benjamin Phan
Verified camping & hiking expert
Reviewed Jul 13, 2022

Fantastic sleeping bag for backpacking and international travel. It packs down very small to save room in your pack, and expands to a premium loft to keep you toasty at night. It's also extremely durable and weighs in at only 2.1 pounds. The filling is high quality 800-fill down.

Nils B
Nils B
Verified camping & hiking expert
Reviewed Jul 13, 2022

Great for 3 season camping and backpacking. Super light and very compressible for backpacking. Also has great hood for warmth, and a double zipper feature for ventilation on the warmer nights. Down fill is treated to be water resistant to help with damp climates