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Details

  • 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 repellant 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

Imported.

Many sleeping bags are rated for temperature by an independent testing protocol, the European Norm (EN) 13537. Each bag gets two ratings: a Comfort rating and Lower Limit rating. The Comfort rating is the lowest temperature at which the bag will keep the average woman (or "cold sleeper") comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep an average man (or "warm sleeper") comfortable. Everyone's body and sleep comfort is different, so EN Ratings are merely a guideline to help you compare products.

View all Marmot Men's Sleeping Bags

REI membership

Specs

Best Use Backpacking
EN Lower Limit 24.4 degrees Fahrenheit
EN Comfort 33.6 degrees Fahrenheit
Temperature Rating (F) 30 degrees Fahrenheit
Temperature Rating (C) -1 degrees Celsius
Weight
Long Left
1 lb. 11 oz.
Regular Left
1 lb. 7.3 oz.
Shell Nylon
Zipper Location Left/Right
Insulation Type Down
Water-Resistant Down Yes
Fill 800-fill goose down
Fill Weight
Long Left
13.8 ounces
Regular Left
10.9 ounces
Lining Nylon
Sleeping Bag Shape Mummy
Fits Up To (in.)
Long Left
78 inches
Regular Left
72 inches
Shoulder Girth (in.)
Long Left
63 inches
Regular Left
61 inches
Hip Girth (in.)
Long Left
58 inches
Regular Left
56 inches
Stuff Sack Size 6 x 12 inches
Stuff Sack Volume 5.6 liters
Gender Unisex
Rated 5 out of 5 by from Amazing I bought this sleeping bag a month ago and lets just say its every thing I wanted. First off this bag is incredibly light. It weights less then 2lbs. It backs down really well (about the size of a Nalgene) and it lofts quickly. The bag is made really well and the down seems to be true the R rating. I spent 3 days in this bag up in Yosemite this past week and I must say im impressed. The best feature of the bag is the second zipper on the opposite side of the main zipper. Which makes opening it up to get some air and extra room really easy.
Date published: 2016-05-03
Rated 5 out of 5 by from The perfect sleeping bag I don't know where to start with this bag, but it's amazing. It packs down a little bigger than a Nalgene and weighs in at under 2 pounds. The EN rating is spot on, I was out on 36 degree night and stayed toasty warm.
Date published: 2016-04-16
Rated 5 out of 5 by from Impressive Performance Simply put this is one of the best gear purchases I have made in a long time. Not only is this bag light and very compressible, it performed better than I expected on a couple cold nights on the AT. One night temp got down to 21 degrees and I was warm and toasty. And I was just sleeping under a tarp... And not only was I warm, I am very pleased with the sizing of the bag. I am 6'6" and pretty broad across the shoulders and the Long size Hydrogen was just roomy enough and I had no problem with the fit. Well done Marmot-great bag! Finally, since this Long size is not commonly stocked in the stores, I had to order online just prior to leaving for the trail. I paid extra for the shipping but REI delivered the bag on time. Well done REI
Date published: 2017-04-20
Rated 3 out of 5 by from Good bag but temp over rated I sure like the size, weight, feel and construction of this bag but it barely kept me warm enough sleeping in shorts and T shirt on a Therm-a-rest Evolite pad at around 40 degrees in very dry weather. The down seems to shift in the tubes leaving cold spots. I held it up to the light and could see through it in many spots. May be a good summer bag but I won't be trusting it in any situation where the temp may fall below 40 or 45.
Date published: 2016-07-03
Rated 5 out of 5 by from Light weight, packs small, perfect bag I bought this bag at the beginning of summer and have used it in everything from a 15F night to nights in the 70s. Terrific bag which is lightweight and packs down really small. Was chilly during the 15F night, but once I layered up I was fine. I have broad shoulders and this works perfectly.
Date published: 2016-08-08
Rated 5 out of 5 by from Amazing Bag This bag is great. I have had it about a year now in have used in everything from 20° to 40° weather in the White Mountains of New Hampshire. It's light, warm, and water resistant. By far my favorite sleeping bag. The reviewers saying that they wouldn't use it in less than 40 degree weather are idiots and don't belong in the woods.
Date published: 2017-03-19
Rated 5 out of 5 by from Best Northwest Bag! This particular purchase was a gift for my son but I have owned this same bag for 5 years and I love it. It's extremely light weight for back packing (and stuffing in a kayak), very warm, and durable. I use the bag from spring to fall in the Pacific Northwest and Canada. My boyfriend has the same bag and its 15 years old and still being used. If you are looking for a high quality light weight bag this is it.
Date published: 2017-01-11
Rated 4 out of 5 by from Light bag but not as warm as claimed I like the bag a lot. I have camped in it down to 30 deg. but I had to have thermal underwear, socks and a fairly thick blanket on top to be comfortable. I was in a 4 season tent with a 2.5 in. air mattress. Without help it is a 45 deg. bag.
Date published: 2016-05-11
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Can you please check your physical stock for Marmot Hydrogen 30F down sleeping bag REGULAR? I havve had two bad experience where I order items from sites and they email me after to say that they are anvailable. So I am skeptical. Please help! Thanks!

Asked by: Wendy
As of April 2017, this sleeping bag is available on our site. Please give us a call if you need assistance placing an order. We can be reached at: 1-800-426-4840.
Answered by: REIservice
Date published: 2017-05-04

Would the Sea to Summit eVent Compression Dry Sack 6 liter work with the regular size bag or would it be a tight fit and better to go with 10L?

Asked by: Dee71f
The 6 liter dry sack will work with the Hydrogen sleeping bag, which comes with a 5.6 liter stuff sack size.
Answered by: REIservice
Date published: 2016-06-13

Will this bag be too hot for summer camping in 70-80F?

Asked by: ephily
For most people, yes, it will be too warm.
Answered by: REIservice
Date published: 2017-06-13

Does Marmot use ethically sourced down?

Asked by: bobito
Yes, details can be found on Marmot's website.
Answered by: REIservice
Date published: 2017-05-24

Are the lining and shell sewn through or baffled.  I ordered the Marmot and will return it because the shell and lining are sewn through.

Asked by: DCJay
The Marmot Hydrogen Down sleeping bag's lining and shell are not sewn through nor is the bag constructed with a traditional baffle method.
Answered by: REIservice
Date published: 2017-04-02
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Back to top

Please select a color/size.

Reviews

Rated 5 out of 5 by from Amazing I bought this sleeping bag a month ago and lets just say its every thing I wanted. First off this bag is incredibly light. It weights less then 2lbs. It backs down really well (about the size of a Nalgene) and it lofts quickly. The bag is made really well and the down seems to be true the R rating. I spent 3 days in this bag up in Yosemite this past week and I must say im impressed. The best feature of the bag is the second zipper on the opposite side of the main zipper. Which makes opening it up to get some air and extra room really easy.
Date published: 2016-05-03
Rated 5 out of 5 by from The perfect sleeping bag I don't know where to start with this bag, but it's amazing. It packs down a little bigger than a Nalgene and weighs in at under 2 pounds. The EN rating is spot on, I was out on 36 degree night and stayed toasty warm.
Date published: 2016-04-16
Rated 5 out of 5 by from Impressive Performance Simply put this is one of the best gear purchases I have made in a long time. Not only is this bag light and very compressible, it performed better than I expected on a couple cold nights on the AT. One night temp got down to 21 degrees and I was warm and toasty. And I was just sleeping under a tarp... And not only was I warm, I am very pleased with the sizing of the bag. I am 6'6" and pretty broad across the shoulders and the Long size Hydrogen was just roomy enough and I had no problem with the fit. Well done Marmot-great bag! Finally, since this Long size is not commonly stocked in the stores, I had to order online just prior to leaving for the trail. I paid extra for the shipping but REI delivered the bag on time. Well done REI
Date published: 2017-04-20
Rated 3 out of 5 by from Good bag but temp over rated I sure like the size, weight, feel and construction of this bag but it barely kept me warm enough sleeping in shorts and T shirt on a Therm-a-rest Evolite pad at around 40 degrees in very dry weather. The down seems to shift in the tubes leaving cold spots. I held it up to the light and could see through it in many spots. May be a good summer bag but I won't be trusting it in any situation where the temp may fall below 40 or 45.
Date published: 2016-07-03
Rated 5 out of 5 by from Light weight, packs small, perfect bag I bought this bag at the beginning of summer and have used it in everything from a 15F night to nights in the 70s. Terrific bag which is lightweight and packs down really small. Was chilly during the 15F night, but once I layered up I was fine. I have broad shoulders and this works perfectly.
Date published: 2016-08-08
Rated 5 out of 5 by from Amazing Bag This bag is great. I have had it about a year now in have used in everything from 20° to 40° weather in the White Mountains of New Hampshire. It's light, warm, and water resistant. By far my favorite sleeping bag. The reviewers saying that they wouldn't use it in less than 40 degree weather are idiots and don't belong in the woods.
Date published: 2017-03-19
Rated 5 out of 5 by from Best Northwest Bag! This particular purchase was a gift for my son but I have owned this same bag for 5 years and I love it. It's extremely light weight for back packing (and stuffing in a kayak), very warm, and durable. I use the bag from spring to fall in the Pacific Northwest and Canada. My boyfriend has the same bag and its 15 years old and still being used. If you are looking for a high quality light weight bag this is it.
Date published: 2017-01-11
Rated 4 out of 5 by from Light bag but not as warm as claimed I like the bag a lot. I have camped in it down to 30 deg. but I had to have thermal underwear, socks and a fairly thick blanket on top to be comfortable. I was in a 4 season tent with a 2.5 in. air mattress. Without help it is a 45 deg. bag.
Date published: 2016-05-11
  • y_2017, m_7, d_24, h_23
  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
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  • loc_en_US, sid_895819, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
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  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getReviews, 19ms
  • REVIEWS, PRODUCT

Questions & Answers

Can you please check your physical stock for Marmot Hydrogen 30F down sleeping bag REGULAR? I havve had two bad experience where I order items from sites and they email me after to say that they are anvailable. So I am skeptical. Please help! Thanks!

Asked by: Wendy
As of April 2017, this sleeping bag is available on our site. Please give us a call if you need assistance placing an order. We can be reached at: 1-800-426-4840.
Answered by: REIservice
Date published: 2017-05-04

Would the Sea to Summit eVent Compression Dry Sack 6 liter work with the regular size bag or would it be a tight fit and better to go with 10L?

Asked by: Dee71f
The 6 liter dry sack will work with the Hydrogen sleeping bag, which comes with a 5.6 liter stuff sack size.
Answered by: REIservice
Date published: 2016-06-13

Will this bag be too hot for summer camping in 70-80F?

Asked by: ephily
For most people, yes, it will be too warm.
Answered by: REIservice
Date published: 2017-06-13

Does Marmot use ethically sourced down?

Asked by: bobito
Yes, details can be found on Marmot's website.
Answered by: REIservice
Date published: 2017-05-24

Are the lining and shell sewn through or baffled.  I ordered the Marmot and will return it because the shell and lining are sewn through.

Asked by: DCJay
The Marmot Hydrogen Down sleeping bag's lining and shell are not sewn through nor is the bag constructed with a traditional baffle method.
Answered by: REIservice
Date published: 2017-04-02
  • y_2017, m_7, d_25, h_2CST
  • bvseo_bulk, prod_bvqa, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_5
  • loc_en_US, sid_895819, prod, sort_[SortEntry(order=NUM_ANSWERS, direction=DESCENDING)]
  • clientName_rei-inc
  • bvseo_sdk, java_sdk, bvseo-4.0.0
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  • QUESTIONS, PRODUCT