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  • Marmot - Cloudbreak 20 Sleeping Bag: 20 Degree Synthetic -

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  • Marmot - Cloudbreak 20 Sleeping Bag: 20 Degree Synthetic -

Marmot Cloudbreak 20 Sleeping Bag: 20 Degree Synthetic

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5 Reviews


Marmot's sub-three-pound, three-season masterpiece.

Laugh in the face of long miles and cold, wet nights when you're carrying the Marmot Cloudbreak 20 Sleeping Bag in your backpack. Two types of ultralight synthetic insulation give this sleeping bag a 20-degree temperature rating, a weight of just under three pounds, and the unique ability to retain warmth even when wet. Marmot's engineers used 'anchors' of Thermal R Micro to add insulation at your feet and core, while the basic Thermal R insulation takes care of everything else from your ankles to waist and from your shoulders to head. Other features include a shell with a water-resistant coating, a hood designed for maximum heat retention and comfort, and unique baffles that utilize a shingle-like structure to eliminate cold spots inside. Aside from the more recreational-style Maverick or Rockaway sleeping bags, the Cloudbreak is the only 20-degree sleeping bag in Marmot's entire lineup (the standard temperature degree ratings are 0, 15, and 30). This sleeping bag is ideal for backpackers who want a lightweight, three-season synthetic sleeping bag solution or wet-weather campers who need something cooler than a 15-degree sleeping bag and who would rather not make the leap all the way up to 30 degrees.

  • The Cloudbreak is ideal for late spring, summer, and early fall backpacking or camping in dry to mild climates
  • EN rating is 32F for the lower limit (an average man’s comfort level) and 21F for the comfort range (average woman’s comfort level)
  • Contoured mummy shape minimizes heat loss at the head and feet while giving you room to move around at the shoulders
  • DWR coating allows the shell to repel light moisture and precipitation so your sleeping bag and insulation stay dry
  • Nylon ripstop and nylon plain weave materials make the shell and lining durable, lightweight, and highly compressible
  • Hybrid insulation technology combines loft advantage of 2.5-denier Thermal R insulation with the packability of 1-denier Thermal R Micro
  • Hybrid insulation provides massive warmth without the weight or size penalty that would otherwise come with this amount of insulation
  • Shingle Wave Construction uses a series diagonal baffles to 'stack' insulation from head to toe (like shingles on a house) and to control cold spots in the event of insulation migration
  • Body-mapped, Thermal R Micro insulation 'anchors' are located closer to your feet and core to provide additional insulation precisely where you need it the most
  • 3D Hood construction matches the natural contour of your head and neck, provides ample room for your face, and maximizes heat retention with minimal bulk
  • Full-length zipper makes entry and exit easier than ever, and it allows you to vent at the feet if you get a little too hot at night
  • Snagless Zipper Tube blocks drafts from forming at the zipper and uses a design that won't get constantly caught in the full-length zipper
  • Face muff keeps your face warm at night while still giving you room to breathe freely, additionally this face muff is free of the hook-and-loop closure that so often rubs against your face and causes discomfort
  • Stuff sack included
  • Item #MAR2748

Tech Specs

nylon ripstop, DWR coating
Thermal R
Draft Collar
Max User Height
[regular] 6 ft, [long] 6 ft 6 in
Stuff Sack
20 F
European Norm Comfort Rating
32.2 F
European Norm Lower Limit Rating
21.6 F
Claimed Weight
2 lb 14 oz
Recommended Use
camping, backpacking
Manufacturer Warranty

Tech Specs

  • Reviews
  • Q & A

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Great Bag

  • Familiarity: I've put it through the wringer

Marmot made a great value bag in the cloud break series. I have had mine a few years and although it has lost a little bit of warmth, that is to be expected from a few summers in a row with 80+ nights in the bag. Other than that it has held up very well, and is still my go to bag for camping or short backpacking trips.

nice sleeping bag

  • Familiarity: I've put it through the wringer

its a nice bag for sure ,it compresses very small ,its light weight ,what i dont like is its very skinny not much room to move around cant move your legs. i had a tough time getting comfy in it ,if you can sleep on your back and dont move at night this would be great ,after 5 days i was sleeping with it open as long as possible at night ,it says 20 deg and yes it would prob keep you alive but you start getting cold in the mid 30s

Great backpacking bag

  • Familiarity: I gave it as a gift but have feedback to share

coming in at just under 3 lbs. it;s hard not to like this bag. Marmot does it again with an effective and lightweight bag that fits into any backpack with ease and keeps you warm on the chilly nights in the wild.

nice bag

  • Familiarity: I've used it several times

I've had this bag for a bit over a year. I've used it on some colder nights, and pelnty of warmer nights. A paddle trip in prince william sound ended up being about 40 degrees warmer than expected, and the bag did alright venting and kept reasonably comfortable despite the 60 and 70 degree nights. Its super soft and feels real nice, and on colder nights it does a great job insulating! All around great bag.

For those of us who are cold blooded

  • Familiarity: I've used it once or twice and have initial impressions

I had a 35 degree rated sleeping bag but it just could not keep me warm enough during 40 degree nights. I tend to be on the cold side at night and this was the perfect solution. I now stay perfectly warm in temperatures in the low 30's. The bag starts getting a little warm in 60 degree weather but I can always use my lighter sleeping bag for warmer weather trips. I tend to camp in mountain regions where the nights get pretty cold.

The feel of this bag is of the highest quality and the fit of the regular is perfect if your under 6'. I'm 5'10" and have good wiggle room.

Overall I would recommend this to anyone who camps regularly in below 65 degree weather.

How small does this bag compress into when you roll it down? Im looking for a good lightweight (relatively cheap) backpacking sleeping bag.