How to Choose Sleeping Bags for Backpacking
Marmot Never Winter 30 Sleeping Bag - Men's
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The men's Marmot Never Winter sleeping bag is an ideal bag for summer camping and river trips, with enough water-resistant 650-fill down insulation to keep you warm when frost is in the air.
Shop similar productsKey Details
Fill
650-fill duck down
Temperature Rating (F)
30 degrees (F)
- Fold-Down Second Zipper Provides added Ventilation and Easy Access, Main Zipper Anti-Snag Slider reduces Snagging
- Anatomical Wrap-Around Footbox Increases Insulation and Room for Your Feet, More Warmth and Comfort
- Certified 650-Fill-Power Down with Down Defender to Improve Water-Resistance in Wet Conditions
- Nautilus Multi-Baffle Hood
- Down-filled Collar with Easy Access Draw Cord
- Full Length Locking YKK Two Way Zipper with Draft Tube to Reduce Heat Loss
- Internal Stash Pocket and Heater Pocket in Footbox
Temperature ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth, since many different factors contribute to your comfort while you sleep. Backpacking bags are typically rated for temperature according to an independent testing protocol—currently International Organization for Standardization (ISO) 23537, though some older items followed European Norm (EN) 13537. Testing is based on a person wearing one base layer and a pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38.
Each bag then gets 2 ratings: 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. Some brands determine their own temperature rating by aligning to the Comfort rating for women’s bags, to the Lower Limit rating for men’s bags, or somewhere in the middle for nongendered bags.
View all Marmot Backpacking Sleeping BagsEach bag then gets 2 ratings: 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. Some brands determine their own temperature rating by aligning to the Comfort rating for women’s bags, to the Lower Limit rating for men’s bags, or somewhere in the middle for nongendered bags.
| Best Use | Backpacking |
|---|---|
| Tested Lower Limit | 28.9 degrees (F) - EN |
| Tested Comfort | 38.5 degrees (F) - EN |
| Temperature Rating (F) | 30 degrees (F) |
| Temperature Rating (C) | -1 degrees (C) |
| Shell | 20d mini ripstop nylon |
| Zipper Location | Left |
| Insulation Type | Down |
| Fill | 650-fill duck down |
| Lining | 20d nylon plain weave |
| Sleeping Bag Shape | Mummy |
| Stuff Sack Size | 7.5 x 16 inches |
| Stuff Sack Volume | 11.6 liters |
| Gender | Men's |
| Sustainability | Down certified to the Responsible Down Standard (RDS) |
Buying Advice
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Chris
NH
Great fit for side sleeper
7 years ago
The Never Winter was pretty great for the night I just spent a few days ago. It was cold and snowy and raining in NH and this thing managed to stay pretty warm throughout the night. I did brush my feet, in the footbox, against a damp side of my tent and that sort of sucked a little - all down sleeping bags would have this problem, though. Overall I'd recommend this though, it is a wonderful fit for a slightly bigger person and allowed my to sleep on my side and stomach without changing the orientation of the thing. I didn't bother cinching the hood since it was comfy already.
Yes , I recommend this product
Dcl10
Michigan
Great quality, lots of features, and plenty warm.
2 years ago
I have some more expensive bags, but the quality is just as good but nearly half the cost. Those are a bit lighter, but also not as durable, so there is a tradeoff, but you can't get better quality by spending more just less weight. I love all the extra thoughtful features. Twin zippers, pockets, snag free zipper etc. I've slept in this down to 15F on Shasta paired with a down puffy and hat, and was plenty warm. Down to 40 it was perfect with no base layers. Not the lightest bag in the world, but the durability and functionality are worth the few extra ounces to me on most trips.
Yes , I recommend this product
Originally posted on marmot.com
Conrad T
More than I could have hoped for!
7 years ago
Great bag, can't express how happy I am with the value! I've already used this bag on a few trips and for early spring in the Rockies it was perfect. Super light, packs down small, and so much warmth in such a lightweight package. This was absolutely what I was looking for. I am confident this will serve me well all through the summer and into fall at which point I plan to get the Never Summer 0 deg bag to have for winter! Can't wait to take it up to RMNP for a backpacking trip this weekend!
Yes , I recommend this product
Originally posted on marmot.com
Matt D
Serpentine Hot Springs, AK
nice features but too narrow for avg US male
6 years ago
The bag provided nice features, ecspecially the inside pocket to store ear plugs! The bag was very narrow in the should width, and could only use the mummy feature if lying on your back with your arms at your sides. To make the bag more comfortable, i slept with the mommy hood on the top and used it like a blanket. The zippers only gut stuck a few times. I beleive i would have been cold, at 35 degrees if i didnt have 2 layers of thermal clothes on and a wool beanie cap.
Yes , I recommend this product
Lestola
Kotka, Finland
30 F is questionable
5 years ago
I used this bag at 33F with two thin summer bags (both rated confort +21 C) as a liner(s) and barely slept well (woke up couble of times to change sleeping position and noticed that my feet felt little bit chilly).. I don’t feel that this bag can really handle 30F as a confort.... But the build quality is very good! And zippers are great!.. weight is low.. I like the design very much but the temperature ratings are too optimistic..
Yes , I recommend this product
Originally posted on marmot.com
I care about our planet
Århus, Denmark
Great sleeping bag. Not super eco-friendly though.
6 years ago
I really like that I can zip my RZ Marmot bag to my wife's LZ Marmot sleeping bag. They should advertise that feature, because it works well. My primary disappointment is that Marmot continues to produce synthetic products made from fossil fuels. I would like to see them transition to materials that are natural (renewable) or at least made from recycled plastic.
Yes , I recommend this product
Originally posted on marmot.com
Walt K
U. P. of Michigan
Nice Summer bag
3 years ago
[This review was collected as part of a promotion.] Very good quick delivery. It appears to be very good quality. I haven't had a chance to try it out yet since we still have snow on the ground here in northern Michigan. I really like the light weight, no snag zipper, and water resistant down. It seems a little thin for a 30 degree bag but I will be using it for summer bag anyway so I don't think I will get cold.
Yes , I recommend this product
Originally posted on marmot.com
GSki
Indiana
Best Lightweight Backpacking Sleeping Bag!
4 years ago
This is the best sleeping bag I have owned. It is perfect for backpacking as it compresses to smaller than a Nalgene and is lightweight. I have used this bag in sub 30 weather with a liner and been perfectly warm through the night. I recommend this bag to everyone as the best available budget lightweight backpacking sleeping bag on the market.
Yes , I recommend this product
Originally posted on marmot.com
Indiethedog
Clinton, NY
Long-lasting
4 years ago
I've had this bag for well over ten years. It has been stuffed into kayaks, backpacks and overhead compartments on five continents. Although the feathers are now tired and leak a bit, as you would expect, the rest of the bag is solid and strong. The zipper seems to snag a lot less that many other sleeping bags I own.
Yes , I recommend this product
Originally posted on marmot.com
Armani
Santa Rosa CA
Great so far...
3 years ago
This should be the perfect complement to my "never summer bag" Light, warm enough but not too hot...unfortunately all my backpacking trips this summer were canceled by the fires in CA, so just tested in once car camping along the coast. Good craftsmanship, nice feel, zippers work well.
Yes , I recommend this product
Originally posted on marmot.com
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