Please select a color/size.


Rated 5 out of 5 by from Great bag! I took this bag on my 2016 Appalachian Trail thru-hike and with a silk liner I stayed warm in March / April throughout the Smokies. Great bag. Just zip it up and down carefully or you will snag the material and tear it.
Date published: 2016-09-10
Rated 5 out of 5 by from So nice I bought a backup I've had a Helium for a year or more and just love the soft silky feel, plus it does a great job of keeping me warm. When it hits about 20 I need to put a blanket or something on top, but I sleep really cold, so I think a normal person would be comfy at a lower temp. I love this thing so much I was awake one night thinking about what I would do if I wore the darn thing out (not likely, I have Marmot bags from the 1990s that still work fine), so I decided to buy a second one for a backup. Some people like having extra jugs of water and cans of food in their basement for emergencies, but with a second Helium, I think I can weather about anything now, and I sleep like a baby. This is the most comfy and luxurious feeling bag I've ever owned, and I'm a sleeping bag junky. I have several Marmots (including a newish Hydrogen and Trestles, along with an old Raging Inferno), several North Face, and a couple of more generic brands, not to mention the ones I've given away. Some women buy shoes, I buy sleeping bags. I love this bag.
Date published: 2017-06-03
Rated 5 out of 5 by from Perfect Used on Shasta in May -- Was perfect for 20-30 degree weather -- very warm, very light, and good price point in this category.
Date published: 2016-06-21
Rated 5 out of 5 by from 7 rough years in many different states I purchased 2 helium sleeping bags in 2010. One long for me and one female specific for my wife. They are incredibly comfortable, warm, and lightweight. I slept on just a tarp without a tent and slept in this bag for around a year while I traveled around the USA. It was surprisingly tough, especially for how silky and soft it feels. I would purchase these bags over and over and over again. Thanks marmot!
Date published: 2018-02-18
Rated 3 out of 5 by from Not worth the money Had one for 3 years, before it got swallowed by the mold monster in Hawaii. It was a great bag at first, however like all down bags they lose loft and warmth over time. I found it nice and plump after a wash, but quickly it was back to feeling like a gross bag. The lightweight material must absorb sweat incredibly fast. In my opinion if your a springtime mountaineer, great choice, and the only possible reason for buying this bag. However, for backpacking even in cold weather get a 30 degree for half the price or less. Bags like the Marmot Elite Tressels have near the same weight and packing ability. Also there is no stress with a cheaper bag when your cowboy camping, sitting by the fire, etc. Once in awhile you need to layer up with a 30 degree, but trust me this Helium was nothing close to a Winter bag either and like I said in the title, not worth the price.
Date published: 2017-12-27
  • y_2018, m_2, d_23, h_22
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.7
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_5
  • loc_en_US, sid_895821, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
  • clientName_rei-inc
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getReviews, 142ms

Questions & Answers

Does this come with a compression sack? If not can I use a compression sack to compress this sleeping bag further?

Asked by: Sasakthi
The Helium Down Sleeping Bag comes with a regular stuff sack and a storage bag. You can certainly use a compression stuff sack from the selection linked below. A 10 liter size bag is appropriate.
Answered by: REIservice
Date published: 2017-02-20

Does the zipper go around the foot box or just half way down on either side?

Asked by: hubba bubba
​The main zipper goes down to about one foot from the bottom.
Answered by: REIservice
Date published: 2017-03-31

How would you compare this to the Marmot Ion bag in terms of pros/cons?

Asked by: Larry
The Ion sleeping bag has a slightly higher quality of goose down, making it a lighter sleeping bag compared to the Helium down. The Helium is a warmer bag by approximately 4 degrees Fahrenheit.
Answered by: REIservice
Date published: 2017-08-14

What is the compressed volume of this bag?

Asked by: shedoesmath
​This sleeping bag has a compressed volume of approximately 7 liters.
Answered by: REIservice
Date published: 2017-09-17

Is there a sleeve or straps on the back to secure a sleeping pad?

Asked by: Tizzlefive0
​No, this sleeping bag does not come with a sleeve or strap on the back.
Answered by: REIservice
Date published: 2017-07-14
  • y_2018, m_2, d_23, h_22CST
  • bvseo_bulk, prod_bvqa, vn_bulk_2.0.7
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_5
  • loc_en_US, sid_895821, prod, sort_[SortEntry(order=NUM_ANSWERS, direction=DESCENDING)]
  • clientName_rei-inc
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getContent, 17ms