Sierra Designs Cloud 20 Review
Cons: Drafty hood, limited lower body ventilation, uninsulated sleeping pad sleeve
Manufacturer: Sierra Designs
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|Pros||Easy zipperless closure, built-in foot vent, wider than average dimensions, fair price||Spacious hourglass shape, innovative venting "gills", waterproof footbox, sturdy compression sack||Lightweight, small packed size, quality down, nice zipper, cozy fabric||Decent weight, respectable warmth, awesome bargain||Great price, respectable weight, simple design|
|Cons||Drafty hood, limited lower body ventilation, uninsulated sleeping pad sleeve||Below average warmth-to-weight ratio, bulky packed size||Moderate warmth||Average materials, limited features, basic design||Subpar warmth, annoying hood drawcords, no storage sack, mediocre versatility|
|Bottom Line||A zipperless design with a traditional mummy bag shape||Premium down in an hourglass shape that offers the roomiest lower body dimensions||An awesome bag at a fair price||An exceptional deal for a capable and sturdy backpacking sleeping bag for those looking to get outside without breaking the bank||An acceptable sleeping bag at a rock bottom price|
|Rating Categories||Sierra Designs Clou...||NEMO Riff 30||REI Co-op Magma 30||Mountain Hardwear B...||REI Co-op Trailbrea...|
|Packed Size (15%)|
|Features & Design (10%)|
|Specs||Sierra Designs Clou...||NEMO Riff 30||REI Co-op Magma 30||Mountain Hardwear B...||REI Co-op Trailbrea...|
|Insulation||800 FP Down||800 FP Down||850 FP Down||650 FP Down||Synthetic - Polyester|
|Compressed Volume||8.4 liters||7.2 liters||6.7 liters||7.5 liters||9.8 liters|
|Measured Bag Weight (Size Long)||2.00 lbs.||1.91 lbs.||1.39 lbs.||1.98 lbs.||2.74 lbs.|
|Manufacturer Claimed Weight (Size Regular)||1.81 lbs.||1.80 lbs.||1.24 lbs.||1.79 lbs.||2.50 lbs.|
|Compression/Stuff Sack Weight||0.7 oz.||2.4 oz.||0.4 oz.||1.6 oz.||1.2 oz.|
|Manufacturer Temp Rating||20 F||30 F||30 F||30 F||30 F|
|EN Temp Rating (Lower Limit)||17 F||29 F||30 F||30 F||29 F|
|Fill Weight||14.8 oz.||10.2 oz.||9.7 oz.||15 oz.||21.1 oz.|
|Compression or Stuff Sack Included||Stuff||Compression||Stuff||Stuff||Stuff|
|Shell material||Ripstop nylon (15D)||Ripstop nylon (20D)||Pertex ripstop nylon (15D)||20D Nylon Ripstop||Polyester w/ DWR|
|Liner material||15d nylon ripstop||30D Nylon Taffeta w/ DWR||15-denier ripstop nylon||30D Plain weave nylon||Polyester|
|Small Organization Pocket||No||Yes||No||Yes||Yes|
|Zipper||None||3/4-length / Side||3/4-length / Side||3/4-length / Left Side||3/4-Length / Left Side|
|Shoulder Girth||62 in.||62 in.||63 in.||62 in.||62 in.|
|Hip Girth||60 in.||54 in.||57 in.||53 in.||56 in.|
|Foot Girth||42 in.||59 in.||Not stated||Not stated||Not stated|
Our Analysis and Test Results
Zippers are so 1990's. Sierra Designs can help you embrace the 21st century with several zipperless sleeping bags. The Cloud has some great innovative features, but we believe their are better zipperless offerings.
Sierra Designs gives the Cloud we tested a 20°F rating, but its performance on the industry-standard EN test is a little better (15° lower limit). Our testers thought both the manufacturer and EN ratings seemed generous. We thought it felt comparable to an average bag with an EN lower limit of 25°.
Potential users should also be aware that to save weight this bag doesn't have any insulation on the bottom side of the torso area. Thus, a good sleeping pad is mandatory for sleeping comfortably with this bag.
Nestling into this bag is a pleasant experience. The closure flaps come close to achieving the familiar feel of the blanket like your are probably use to sleeping with. Its overall comfort, however, did not equal some other zipperless designs because the Cloud's narrow dimensions leave it with the same constrictive feel as many other mummy bags.
Like a lot of bags reviewed, the Cloud comes with a simple drawstring stuff sack that's unable to compress it effectively. With a third-party compression sack, we were able to pack a size long to 8.4 liters in volume. This leaves it with an above average packed sized, comparable to the some similarly warm, but synthetic bags.
There are several different aspects of this bag that harm and hurt its versatility. The foot box, for example, has a slit on the underside for your feet to escape. This lets you keep the bag on while you shuffle around awkwardly or sit and sip your morning coffee. The same slit, however, isn't very effective at venting should your lower body overheat.
The main entry/exit flaps make up for this to some degree with a range of configurations for different outside temperatures. But when the bag really hits the pad, you still have fewer options than a traditional full-length zipper bag if your legs start to sweat.
Features and Design
To cinch the hood tight, the Cloud features a drawstring like that found on most sleeping bags. For this drawstring to be effective, however, the main closure flap must be pinned beneath your left shoulder. When you roll onto your right side, it's difficult to keep this flap pinned down. But without it, the hood will not stay cinched closed.
Sierra Designs also brags about a sleeve on the underside of the bag that ensures you can't slide off your sleeping pad in the middle of the night. That's true, but unlike some other bags, this pad attachment system isn't removable if you prefer to save weight and not to use it.
For its middle of the road performance, the Cloud comes with a middle of the road price. At full MSRP, we don't consider it to be a particularly good value, but bigger fans of the no-zipper design will likely disagree. For a few bucks more there are several bags that offer similar comfort with better performance in other areas.
Although most of our testers weren't fond of the Cloud, it did garner some passionate supporters. These supporters liked its simple flap closure design that provided a similar feel to sleeping with an ordinary blanket. Its critics, however, maintain the same design limits its versatility and adds unnecessary weight. The bottom line: if the no-zipper concept sounds like heaven to you, don't let this review discourage you. The Sierra Designs Cloud 20 is a decent bag whose innovative design is sure to please many.
— Jack Cramer
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