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Marmot
Never Summer Sleeping Bag: 0F Down

4.75 out of 5 stars
16 Reviews

Out of Stock

Don't worry though, we have a lot more Down Sleeping Bags in stock than that.

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Why We Like The Marmot Never Summer Sleeping Bag

Summer might bring mild weather, but it also brings crowded trails, so we use frigid temps to our advantage and head to the mountains with Marmot's Never Summer 0 Degree Down Sleeping Bag in winter weather. Stuffed full of Marmot's water-resistant Down Defender 650-fill down, the Never Summer keeps us warm when temperatures drop to single digits. Its DWR coating adds a bit more protection from light snow flurries that might accumulate along the walls of the tent.


Details

  • Durable and warm sleeping bag for winter overnight adventures
  • Down Defender insulation resists water and stays warm
  • Folding zipper offers ventilation and easy access
  • Anatomical footbox adds more room and more warmth
  • Internal footbox heater pocket adds warmth and storage
  • Stuff sack and storage sack included for easy transport
  • Item #MARZ9NE
Material
[face fabric] 20D 100% nylon mini ripstop, 30D 100% nylon DWR, [lining] 20D 100% nylon
Insulation
650-fill power down with Down Defender
Shape
mummy
Zipper
full-length locking 2-way
Max User Height
[regular] 6ft, [long] 6ft 6in
Shoulder Circumference
[regular] 62in, [long] 64in
Hip Circumference
[regular] 57in, [long] 58in
Foot Circumference
[regular] 48.5in, [long] 50in
Bag Length
[regular] 83in, [long] 89in
Draft Tube
yes
Pockets
1 internal stash, 1 heater
Pad Retainer
none
Venting
fold-down second zipper
Fill Weight
1lb 15.1oz
Degree
0F
European Norm/ISO Comfort Rating
9.5F
European Norm/ISO Lower Limit Rating
-4.7F
Storage Sack
included
Stuff Sack
included
Stuff Size
9 x 18in
Claimed Weight
3lb 3oz
Activity
winter camping
Manufacturer Warranty
lifetime

What do you think about this product?

Overall Rating

5 based on 16 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 1 reviews
4 Stars - 2 reviews
5 Stars - 13 reviews

Fits True To Size

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5 out of 5 stars

April 11, 2025

Great cold weather bag for the price

Familiarity:
I've used it several times
Size Bought:
Regular Men’s

For the price…5 Star! Down bag, decent weight (Not backpack light). Zero degrees is a generous temperature rating. I am a warm sleeper and once it got below 20° F, I was feeling it. But the bag is well made, all stitching and zippers seem solid. I like the double zipper entry as well as the vented foot box. Roomy enough to go from back to side and still stay covered. Hood is not typical of a winter bag. Doesn’t really close up around your head like my Marmot Helium (15°F). But all that said, for car camping in colder weather, for under $200, great bag

D Blackett
5 out of 5 stars

April 3, 2025

Great value

[This review was collected as part of a promotion.] Very warm, good price, packs down nicely. Used it on a trip through South America and it kept me toasty

ChiliPop
marmot.com

Originally reviewed on marmot.com

5 out of 5 stars

March 20, 2025

Great Value and Warmth

[This review was collected as part of a promotion.] The Men's Never Summer 0° Sleeping Bag (2024) is an excellent entry-level down sleeping bag that offers a great balance of warmth, quality, and affordability. For those looking for a reliable cold-weather sleeping bag without breaking the bank, this is one of the best options available. Filled with 650-fill-power down, it provides excellent insulation while remaining lightweight and compressible, making it easy to pack for winter camping, mountaineering, or cold-weather backpacking. The water-resistant down treatment helps maintain warmth even in damp conditions, and the draft tube and hood effectively seal in heat on frigid nights. For the price, it’s hard to beat the performance and comfort this bag offers. Whether you're new to winter camping or looking for a solid, budget-friendly down sleeping bag, the Never Summer 0° is a fantastic choice!

Gabriel Abramoff
marmot.com

Originally reviewed on marmot.com

4 out of 5 stars

October 31, 2024

Definitely warm

Familiarity:
I've used it several times
Size Bought:
Xl

I wish the zips went down a little further. Great in the cold. A little constrictive in the not so cold nights.

What?
5 out of 5 stars

October 10, 2024

Great Design and performance

Familiarity:
I've used it once or twice and have initial impressions
Size Bought:
Large

Perfect to travel all season! light and warm!! very confortable.

Agus Mangia
5 out of 5 stars

September 12, 2024

helped keep me warm

Familiarity:
I've used it several times

was doing the salkantay trek and it was probably 13°C and used a liner with it and it felt perfect.

chellyfaye
4 out of 5 stars

December 20, 2023

New never summer vs Micrón 0 (same old never summe

[This review was collected as part of a promotion.] Hi, this new never summer weighs 1.8kg and has 1100kg of filling, the range is -8 to -15 VS the micron 0 which weighs 1.4kg with 900g of filling and its range is -12 to -20?? It doesn't make much sense, any explanation? Thank you so much

LeonelC
marmot.com

Originally reviewed on marmot.com

5 out of 5 stars

December 18, 2023

perfect winter outside activity sleeping bag

[This review was collected as part of a promotion.] awesome sleeping bag for (mid) cold winter nights outside use this bag most for bike packing tours light weight and small packing size makes it perfect for my needs i am 6.6 (200 cm) tall and my weight is 220 pounds (100 kg) and the bag fits perfect (especially it is long enough for a 6.6 / 6.7 height person conclusion: recommended BUY!

marmot.com

Originally reviewed on marmot.com

3 out of 5 stars

November 30, 2023

Comfortable

[This review was collected as part of a promotion.] The bag is cozy and feels soft and warm. However, the stitching is very poor. They use a running or baste stitch on most of the bag which has poor friction. If any part of the stitch is torn, the rest will eventually come out, and quickly. This was demonstrated by one of the loops on the side immediately ripping out the day the bag came in from the mail. I expected higher quality stitching for the pricetag.

user image
Morthos
marmot.com

Originally reviewed on marmot.com

5 out of 5 stars

November 27, 2023

Good cold weather down car camping bag

Snuggly warm. Comfy below freezing temps; helps to have a good pad.

Paulsner
marmot.com

Originally reviewed on marmot.com

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