Sierra Designs Cloud 800 35 Degree Down Sleeping Bag

2°C Comfort Limit, 268g of 800 Fill Power DriDown
Weighs 654g (Regular bag)
Code: SS20726V
  • From £279.99
  • (FREE Delivery on orders over £15)
  • RRP £294.99
Item out of Stock | Usually dispatched within 24 hours

The Cloud 800 Sleeping Bag is a truly innovative design that really stands out from the rest. The zipless opening with oversized comforter really works especially for people who move around during the night, people looking for extra room in their bags and anyone who likes to cool off quickly. 

Sierra Designs says:

Welcome to the most comfortable night’s sleep you’ll have in the backcountry. Hailed as Outside magazine’s “Best Sleeping Bag For Backpacking” and an evolution of our award winning Backcountry Bed, the Cloud features a zipperless design with an integrated comforter. Constructed with 15d nylon ripstop fabrics and 800 fill power DriDown™, delivering an ultra comfortable lightweight mummy. To top it off, the Cloud touts our patented self sealing foot vent and a pad sleeve, allowing you to vent heat and move around without worry.

| Click here for more info on Sierra Designs, their history, philosophy and information on how they support their mission to get everyone 'outside'.

Sierra Design's have developed a unique sleeping bag in the Cloud 800. There are a number of practical features that you only truly appreciate once you're using the bag. The zipless, quilt style opening that wraps around you seems like a gimmick until you get to enjoy how easily you can get in and out of it. The opening has an oversized comforter which acts like a quilt so you can really wrap yourself up in it if the temperatures drop. Alternatively you can quickly and easily open it up to dump heat if you're too hot.

The bottom of the bag has a generously sized sleeping mat sleeve that keeps your mat in place through the night even if you move around a lot. The best aspect of the bag for me personally is the self sealing foot vent. I get hot feet so restrictive mummy bags are often uncomfortable due to feet that are overheating. On the Cloud you can easily slide your feet out of the vent on the bottom to cool off or just let air in. Due to the placement of the vent and the overlapping materials, as soon as your feet are inside there no chance of cold air getting in or your feet accidently getting out. An ingenious design feature. 

This version has 268g of 800 Fill Power DriDown that has a 2°C Comfort Limit so its good for two to three season use, particularly if you're a warm sleeper. The fabrics used are 15D so they are lightweight but also more than many of the lightest bags out there. The dimensions of the bag are generous so it would suit someone after a larger bag, someone who moves around a lot at night and warm sleepers. The overall weight is really impressive given all the features too.

- Reviewed by Ultralight Outdoor Gear

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Help and advice: Choosing a sleeping bag advice
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  • Patent pending zipperless design for more comfort
  • Oversized integrated comforter resemble all the comforts of your bed at home
  • Insulated shoulder pocket keeps comforter wrapped around you sealing out drafts
  • Patented self-sealing foot vent allows fast and easy ventilation
  • Sleeping pad sleeve keeps pad under you for comfort and warmth and replaces unnecessary bottom insulation
  • PFC-Free 800FP DriDown® and 15d nylon fabrics

Temperature Rating

  • EN Limit Temp Rating: 26°F / -3°C
  • EN Comfort Temp Rating:  36°F / 2°C

Regular Specs

  • Weight: 654g (excludes storage bags)
  • Fill Weight: 9.5oz / 268g
  • Fits Up To: 6' 0" / 183 cm
  • Length: 78in / 198 cm
  • Shoulder Circumference: 60" / 152 cm
  • Hip Circumference: 58" / 147 cm
  • Footbox Circumference: 40" / 102 cm
  • Sleeping Pad Sleeve Circumference:  45.5" / 115.6 cm
  • Fits Sleeping Pad (WxH): 20" x 2.5" / 51 x 6.4 cm
  • Mesh Stoarge Bag Size (LxW): 20 x 12" / 51 x 31 cm
  • Stuff Sack Size (L x W): 13 x 7" / 33 x 18cm

Long Specs

  • Weight: 728g (excludes storage bags)
  • Fill Weight: 10.4oz / 294g
  • Fits Up To: 6' 6" / 198 cm
  • Length: 84in / 213 cm
  • Shoulder Circumference: 62" / 157 cm
  • Hip Circumference: 60" / 152 cm
  • Footbox Circumference: 42" / 107 cm
  • Sleeping Pad Sleeve Circumference:  55.5" / 141 cm
  • Fits Sleeping Pad (WxH): 25" x 2.5" / 64 x 6.4 cm
  • Mesh Stoarge Bag Size (LxW): 20 x 12" / 51 x 31 cm
  • Stuff Sack Size (L x W): 13 x 7" / 33 x 18cm


  • Insulation: 800FP PFC-Free DriDown
  • Shell Fabric: 15d nylon risptop
  • Liner Fabric: 15d nylon risptop
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