Compact and weighing well under 2 pounds, the Marmot Hydrogen 30 Degree sleeping bag is an ideal choice for high-performance backpacking in mild to cool temperatures. An array of features and 800+ fill water-resistant down insulation equip the bag for backcountry adventure.
The Hydrogen 30 Degree is insulated with certified 800+ fill goose down. Fill power measures the loft or "fluffiness" of down insulation and Marmot goes to great lengths to guarantee the 800+ certification with a battery of in-house and external verifications. Renowned for their efficiency in retaining heat and compressible properties, the feathers and fibers of down have an incredibly soft, comfortable feel and, despite advances in synthetic materials, continue to provide the best warmth-to-weight ratio of any insulation available. The one weakness of down insulation is that it loses much of its ability to maintain warmth when it gets wet; this is less of a problem in the Hydrogen 30 Degree, though, since the down in this bag is protected with Marmot’s Down Defender water repellent treatment that allows the down to stay drier 10 times longer than untreated down in damp conditions. Down Defender down also maintains significantly more loft and dries faster than untreated down.
Despite its lightweight construction, the Hydrogen 30 Degree makes no sacrifice with regards to performance and features. Eliminating cold spots and providing comfort, sewn-through baffles ensure that the insulation is distributed evenly throughout the bag. The contoured, ergonomic hood helps reduce heat loss and keeps your head warm and comfortable. An insulated draft tube sewn behind the full-length zipper keeps cold air from reaching the inside of the sleeping bag and zipper guards help to avoid irritating and damaging snags. A “fold down” second zipper enables you to vent the bag when needed and also makes it easier to get in and out of the bag. An anatomically-designed footbox provides a more natural fit and improves warmth and comfort.
Filled and finished in the USA (Rohnert Park, CA), the Marmot Hydrogen 30 Degree sleeping bag is available in Regular (fits up to 6' 0") and Long (fits up to 6' 6") lengths. A stuff sack and storage sack are included.
- Filled and finished in the USA
- Certified 800+ fill power goose down with Down Defender treatment
- Fold-Down second zipper provides added ventilation and easy access
- Anatomically designed footbox with wrap-around construction
- Full length locking YKK two-way zipper with zip guard
- Smooth-Curved baffle construction reduces down shifting
- Stuff and Storage Sack Included
Best Use Backpacking, Camping Insulation Type Down Item Weight Regular: 1 lb 7.3 oz
Long: 1 lb 11 oz
Other Stuff Sack and Storage Sack Included Warranty Limited Lifetime Packed Size Regular: 6" x 12"
Long: 6" x 12"
Shell Material Pertex Microlight 20D 100% Nylon Ripstop DWR 1.03 oz/yd Liner Material 30D 100% Nylon DWR 1.09 oz/yd Fits to Length Regular: 6' 0"
Long: 6' 6"
Fits to Girth Regular: 61"
Fill Material 800+ Fill Power Goose Down Temperature Rating 30 Degrees F EN Comfort Rating 33.6 Degrees F EN Lower Limit Rating 23.4 Degrees F
Real Customer Reviews
- Excellent for Moderate NorCal Climes
Likes: Light Weight; Packs Down Small; Well Constructed; Long version fits me well, especially around the shoulders; Small Zipper on non-zippered side allows for greater mobility when getting in/out. Love to use this when backpacking; fits in the pack efficiently. I do use a pad underneath (and sometimes a cot) so good to have a little extra room in the pack that this enables..
Dislikes: Short zipper could be a few inches longer if it were up to me. Color is not good next to my similarly-colored tent (but not quite a match).
- Ultracompact but not quite warm enough
Likes: This bag is amazing light and packs down quite small.
Dislikes: Even though this bag is rated at 30 degrees, I still found myself a little chilled at 45 degrees.
- Great Product
Likes: Spent a lot of time researching sleeping bags (trying to find a replacement for my synthetic bag that I have had for several years). Weight and compressibility were the most important factors and I am glad I found this bag at such a great price. I can't get over how small this bag compresses and how light it is.
Dislikes: As another reviewer mentioned, the stuff sack is a little snug.
- Marmot Hydrogen
Likes: Unbelievably warm and light
Compresses down to a very impressive size
Includes a marmot mesh storage bag that allows it to be stored uncompressed
I really like the no jam zipper, as well as the heavily insulated footbox and hood
The hood design is excellent with a flap that allows you to sleep in it when it gets warm out
Dislikes: The Marmot stuff sack that is included seems too small and really takes a lot of pushing to get the sleeping bag in, and I am worried about damaging the loft by overcompressing.
- Excellent Product
Likes: Extremely lightweight with plenty of warmth and room to sleep. Compresses down to a very small size in my backpack. Used it on a 4 day backpacking trip and it was fantastic. Looking forward to using it next time.
Dislikes: No dislikes about the bag. Would have been better if it came with a waterproof stuff sack.
- We'll see
Likes: Light weight and compressible. We'll find out how well the water resistant down works...and the temperature range.
Dislikes: A snug (maybe too snug ) fit around the shoulders.
- Compact and warm
Likes: Packs down very small. Kept me warm on my camping trip.
- First Impressions are Great!
Likes: - Super light weight and compactable (its feather light and backs down to about 5 liters)
- Warmth to weight ratio is unbelievable
- Down Defender water resistance was great - We hit a lot of rain on my first backpack with this sleeping bag. The bag got pretty damp but stayed warm and dried incredibly fast
- Incredibly comfortable - Every night I looked forward to sleeping in the bag. The temps at night got around 35 degrees F and I was comfortably warm throughout the night.
- Simple design - This bag is a simple down bag that gives you exactly what you need without any extra features or weight.
Dislikes: None yet. This bag is amazing.
- Very nice and light sleeping bag
Likes: It is my second purchase for the same sleeping bag and plan to be gift to my friend. It is very light and small after condense. So it is easy to pack and carry. Very warm around 30F temperature.
Dislikes: Not found it yet. Otherwise I won't buy the second one.
Likes: Great fit while still roomy, lightweight and warm. Love it.
Earn Gear Points for Reviewing Products
Join our FREE Inside Edge program and receive 20% off a full-price item. Earn discount points for reviewing items you purchase and receive exclusive discounts.
What are points?
As a member you can share reviews of items you purchase and we'll reward you with discount points valued at 5% of the item's original purchase price.
It’s EASY and it’s FREE.Sign Up Today »