Marmot Hydrogen 30 Sleeping Bag

This product is not available.

Shop similar products

At just a pound and a half, the Marmot Hydrogen 30 sleeping bag is constructed with curved baffles to reduce the shifting of its water-resistant 800-fill goose down for superb loft and warmth.

  • Features

    • Certified 800-fill goose down with Down Defender treatment for improved water-resistance in wet conditions
    • Smooth, curved baffles reduce down shifting; stretch tricot baffles provide strength and durability for long bag life
    • Ultralight Pertex Microlight 20d nylon ripstop with durable water repellent finish
    • Anatomically designed footbox with wrap-around construction allows down to loft fully around your feet for optimum warmth and comfort
    • Nautilus multi-baffle hood envelopes your head in warmth; adjustable drawcord cinches hood about your face
    • Fold-down second zipper provides added ventilation and easy bag access
    • Insulated draft tube backs a full-length, 2-way, snag-free zipper to prevent cold air getting in
    • Internal stash pocket stows nighttime essentials
    • Zipper garage keeps zipper pull in its place at night
    • 2 hang loops for storing and airing out sleeping bag
    • Stuff sack and storage sack included


    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 Men's Sleeping Bags
  • Technical Specs

    Best Use


    Tested Lower Limit

    24.4 degrees (F) - EN

    Tested Comfort

    33.6 degrees (F) - EN

    Temperature Rating (F)

    30 degrees (F)

    Temperature Rating (C)

    -1 degrees (C)



    Zipper Location


    Insulation Type


    Water-Resistant Down



    800-fill goose down



    Sleeping Bag Shape


    Stuff Sack Size

    6 x 12 inches

    Stuff Sack Volume

    5.6 liters



  • Reviews
    46 reviews with an average rating of 4.7 out of 5 stars

    Loading Reviews...
  • Questions & Answers

    Loading Questions...