Marmot Helium 15 Sleeping Bag

Features

• Certified 800-fill-power goose down features ExpeDRY for quicker drying
• Main zipper with antisnag slider and fold-down second zipper provides added ventilation and easy access
• Anatomically designed footbox with wraparound construction increases warmth
• Smooth, curved baffles reduce down shifting
• ISO tested for reliable temperature rating
• Stuff sack and storage sack included

Imported.

Many sleeping bags are rated for temperature by an independent testing protocol. REI and the broader industry now use the International Organization for Standardization (ISO) 23537 protocol, which improves on the older European Norm (EN) 13537 standard; you may still see older items in our assortment that were only EN tested. With either protocol, each bag gets a Comfort (or T-Comfort) rating and Lower Limit (or T-Limit) rating. The Comfort rating is the lowest temperature at which the bag will keep the average “cold sleeper” comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average “warm sleeper” comfortable. Ratings are based on a person wearing one long underwear layer and a pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38. Many brands use the Comfort rating for women’s bags and the Lower Limit rating for men’s and unisex bags. Everyone’s body and sleep comfort differ, and conditions of use (posture, clothing, sleeping pad R-value, wind, humidity, etc.) affect total insulation, so EN and ISO ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth.View all Marmot Backpacking Sleeping Bags

Technical Specs

Best Use

Tested Lower Limit

Tested Comfort

Temperature Rating (F)

Temperature Rating (C)

Weight

Shell

Zipper Location

Insulation Type

Water-Resistant Down

Fill

Fill Weight

Lining

Sleeping Bag Shape

Fits Up To (in.)

Shoulder Girth (in.)

Hip Girth (in.)

Stuff Sack Size

Stuff Sack Volume

Gender

Backpacking

16 degrees (F) – ISO

27 degrees (F) – ISO

15 degrees (F)

-9.44 degrees (C)

Short: 2 lbs. 0.5 oz. Regular: 2 lbs. 2.7 oz. Long: 2 lbs. 6 oz.

Nylon ripstop

Left

Down

Yes

800-fill-power goose down

1 lb. 2 oz.

Nylon plain weave

Mummy

Short: 66 inches Regular: 72 inches Long: 78 inches

Short: 58 inches Regular: 61 inches Long: 63 inches

Short: 54.3 inches Regular: 55.9 inches Long: 57.9 inches

7.1 x 14.2 inches

9.2 liters

Unisex