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Helium Down Sleeping Bag

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Helium Down Sleeping Bag is available for purchase in increments of 1

Remarkably light and compact, the 3-season Marmot Helium delivers impressive warmth and comfort in a durable, water-resistant, 800-fill-power goose down sleeping bag.

  • 15-degree lower limit rating, 28-degree comfort rating
  • 850-fill down with Down Defender water-resistant treatment
  • Mummy bag with sewn-through baffles
  • Pertex Microlight nylon ripstop fabric with DWR treatment
  • Ultralight
  • Six-baffle Nautilus drawcord hood with insulated collar and draft tube
  • Trapezoidal footbox construction
  • Stretch tricot baffles and head and foot


Material: [shell] Pertex Microlight (20D nylon ripstop), DWR coating, [lining] Pertex Microlight (30D nylon)
Insulation: 850+ fill goose down
Shape: Mummy
Draft Collar: Yes
Zipper: Left
Max User Height: [regular] 6 ft, [long] 6 ft 6 in
Shoulder Circumference: [regular] 61 in, [long] 63 in
Hip Circumference: [regular] 57 in, [long] 59 in
Foot Circumference: [regular] 39 in, [long] 41 in
Bag Length: [regular] 83 in, [long] 89 in
Fill Weight: [regular] 19.5 oz, [long] 21.5 oz
Degree: 15 F
European Norm Comfort Rating: 27.7 F
European Norm Lower Limit Rating: 16.3 F
Stuff Size: 7 x 14 in
Stuff Sack: Yes
Storage Sack: Yes
Claimed Weight: [regular] 2 lb 2.6 oz, [long] 2 lb 6 oz
Recommended Use: Backpacking, camping
Manufacturer Warranty: Lifetime