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Sierra Designs Cloud 800 Sleeping Bag: 35F Down

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Like sleeping on a cloud, only way warmer.

The Sierra Designs Cloud 800 Dridown 35 Degree Sleeping Bag is the closest thing you'll get to snoozing on a cloud with its lofty 800-fill DriDown insulation combined with an innovative zipperless design that significantly reduces weight and increases sleeping comfort. It's a great choice for the minimalist backpacker seeking a cozy sleeping bag for three-season use in most environments, seeing it's rated to 36 degrees Fahrenheit on the European Norm Comfort scale. Another benefit, the 800-fill DriDown insulation wards off condensation and moisture with its hydrophobic treatment, so you'll remain toasty-warm even when it's damp outside.

Taking design inspiration from Sierra Design's Backcountry Bed, the Cloud 800 Sleeping Bag ditches pesky zippers for an integrated comforter that cozily wraps your body like a cocoon. Unlike the Backcountry Bed, the Cloud 800 Sleeping Bag offers a single-sided entrance, instead of a dual-sided design. This single-sided entry saves you approximately eight ounces from a comparable Backcountry Bed, making it even better for the minimalist backpacker. Plus, you'll find the internal comforter doesn't come undone while sleeping, as Sierra Designs uses an ingenious shoulder pocket to keep it wrapped around your body, even if you toss and turn throughout the night.

  • Ultralight sleeping bag with innovative zipperless design
  • 8oz lighter than a comparable Backcountry Bed rated to 35F
  • 35-degree Fahrenheit rating for three-season warmth
  • 800-fill DriDown maintains lofting power, even in the damp
  • Zipperless design with internal comforter for cozier feel
  • Shoulder pocket keeps it snugly wrapped around your body
  • 1/2-length pad sleeve provides a secure sleeping platform
  • Self-sealing foot vent for regulating body temperature
  • Item #SDS009M

[shell] 15D nylon ripstop, [lining] 15D nylon ripstop
800-fill DriDown
hydrophobic down treatment (PFC-free)
zipperless design with integrated comforter
Max User Height
[regular] 6 ft, [long] 6 ft 6 in
Shoulder Circumference
[regular] 60 in, [long] 62 in
Hip Circumference
[regular] 58 in, [long] 60 in
Foot Circumference
[regular] 40 in, [long] 42 in
Bag Length
[regular] 78 in, [long] 84 in
Pad Retainer
[circumference x width x height] (regular) 45.5 x 20 x 2.5in, (long) 55.5 x 25 x 2.5in
hands-free, self-sealing foot vent
Fill Weight
[regular] 9.5 oz, [long] 10.4 oz
35 F
European Norm Comfort Rating
36 F
European Norm Lower Limit Rating
26 F
Storage Sack
yes, included mesh storage bag
Stuff Sack
yes, included stuff sack
Stuff Size
[regular, long] 13 x 7 in
Claimed Weight
[regular] 1 lb 7 oz, [long] 1 lb 9 oz
Recommended Use
Manufacturer Warranty

Tech Specs

What do you think about this product?


>Rating: 5

Exactly what I wanted

I've put it through the wringer

Love this bag. It is exactly what I thought I was getting. The zipperless design is innovative and intuitive, and the sleeping pad sleeve keeps me in place throughout the night. I’m usually hot, so the foot vent gets used quite often. I also appreciate that the bottom isn’t insulated, as that helps keep this bag so light.

>Rating: 3

Good bag, depending on how you sleep

I've put it through the wringer

I bought this bag because I was really stoked about the zipperless design and light weight. I took it to Mongolia and it was a fantastic bag for ger sleeping and wild camping, but it has a few drawbacks. I personally sleep on my side and tend to toss around. So if I curl up in the bag as it's designed, it's SO warm and cozy. BUT if I want to roll the other way, it's hard to get snuggled in. Also as someone who tosses and turns, I found the foot box sort of got tangled while the pad retainer stayed in place, meaning I'd eventually have to get out of the bag to untangle myself. So I fixed that by taking my pad out of the pad sleeve, but then my back was cold. All these issues wouldn't affect you IF you don't toss around and sleep either on one side or your back.


Sleeping on a Cloud never looked so good