Sierra Designs Cloud 800F 20° Sleeping Bag

Product Information

In the mountains you need your gear to be as light as possible and still able to do its job. Being light reduces fatigue and lets you move through hazard zones faster thereby reducing your exposure to risk. In short, light is right.

I have only used this bag for three nights so far. The conditions were fair (no rain). This is my second Sierra Designs sleeping bag and I am a dedicated customer! The Sierra Designs Cloud 800 35 features a generous pad sleeve to insert a sleeping pad in. To save weight, no down fill is located at the bottom of the bag where the pad sleeve fits. Comfort Limit Rating: This is the lowest temperature at which an average male should experience a comfortable night’s sleep whilst laid down in a curled up position. We paired this bag with one of Sierra Designs’ Granby Insulated Air Mats, which has an R-value of 2.1. This ensured that the bag was plenty warm enough for late spring, summer and early autumn camps. The high-quality 800FP moisture-resistant down lofts well, being housed in chunky box-wall baffles. The quilted flap can also be pulled right up to the chin, ensuring we experience minimal heat loss. I must first admit that the sleeping bag is too wide for me leaving empty space in it, and I probably should have bought the women's version. I guess that part of how it was designed, was to give you extra room for comfort. Plus, I’m relatively a cold sleeper.

Conclusion

The Sierra Designs Cloud 800 35's zipperless design and oversized comforter can help one find solace after a long day of hiking. Those not “blessed” with a snuggle buddy in their tent or who are looking for an excuse to escape their temperature-incompatible significant other, rejoice! The fit is excellent with lots of room to move about. I would classify it as a wider than normal mummy bag. I'm 6' tall and the fit is perfect. The added foot vents are a nice touch when you need to cool off a bit but don't want to fully get outside the bag. If you don’t want the restriction imposed by a zipped bag and don’t fancy a quilt because you move around too much at night then the Cloud 800 bags deliver unrestricted rest when you want it and warmth when you need it. Because of the zipper-less design, the entry is a little tight. But once you've got your legs in the bag it works just fine.

Easy to use and regulate temperature. Most comfortable sleeping bag experience yet. Temp rating seems accurate and materials are top quality. This womens version has 419g of 800 Fill Power DriDown that has a -3°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. However, the EN 13537 European Standard does not apply to down-filled sleeping bags with a fill weight of more than 800g; for those bags, you will have to rely on the manufacturer's experience and technical expertise, which is often more accurate!

Recently on Trailspace

I used this bag for the last four years on many multi-day treks and overnight hikes. I am an experienced hikers.

Those interested in where the down in your bag was sourced (or Portlandia fans) will rejoice that Sierra Designs lets you know where the hardworking geese who made your bag lived out their final days. I scanned the QR code on my bag and learned that the down in my bag was from a Chinese source. It makes sense, I understand that they eat a lot of goose there and I’m glad they saved the down for my bag. This version has 419g of 800 Fill Power DriDown that has a -3°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. Offering unrivalled comfort in its weight class, the Cloud 800 20° sleeping bag from Sierra Designs gives you a standout sleep system for 3-season, cold-weather camping and trekking. We always recommend that you choose your bag according to the coldest conditions you will experience; you can always unzip a bag if it is too warm, but trying to sleep when you’re too cold is just miserable. Bear in mind that we are all individuals, so we all feel the cold differently and that our own resistance will fluctuate depending on a whole load of factors, including how much we have eaten, whether we have consumed alcohol, whether we need a wee or what kind of mood we are in! I finally got to try this bag out this past weekend on the Buffalo River Trail in Arkansas. The temperatures at night ranged from around 45-55° so I wasn't truly able to test the warmth of the bag. I found no drafts in the bag, except if you don't put your feet in the right way, they slide out of the footbox in the slot.

Warmth issues: As I was very pleased with the comfort level of this bag, I was very disappointed with the warmth of it. I always used it in higher temps than the comfort rating and I had many cold nights. Bottom line, I love the concept, and I would much prefer it over a conventional mummy bag, I just wish the bag would be snugger, with more down in vital areas. To help you on your quest for a light load with gear that still works and doesn’t require a trust fund, Sierra Designs brings us the Cloud 20. This bag seems to do a good job of fixing a few common sleeping bag complaints. Durability: It’s a well-made bag, the fabric is pretty thin and feels gentle, but so far, I had zero issues with it or with the seams. The filling is leaking constantly, but mostly it's just small feathers and down fragments. Taken as a whole, all the features work well together, and we're pretty certain that if you find yourself comfortable in the bag the first time you try it out in-store, you'll love it while on the trail. If you're first and foremost a strict adherent of "Keep it Simple", then the Cloud 800's list of well thought out details may just be a detraction. Value

Getting in and out of the bag is super easy since there's no zipper to fiddle with! I also found that the part of the bag that folds over you like a blanket stays nicely in place and is easy enough to throw off if you get too warm. Sleeping pad sleeve keeps pad under you for comfort and warmth and replaces unnecessary bottom insulation The Cloud 800's biggest strength may be in its comfort. After all, its most unique feature that makes it stand out from all the other products we've tested is its oversized comforter. While many of the bags reviewed cut weight by keeping the fit trim, the Cloud 800 has a more than generous fit in the shoulders due to the fact that the zipperless design allows you to open up the bag as much as you would reasonably like. This could be especially appreciated to those who feel claustrophobic in other ultralight mummy sleeping bags.

An adjustable hood can be cinched for added protection while an innovative self-sealing foot vent lets you slip your feet free from the bag for fast and easy ventilation on warmer nights. In colder conditions, when overnight temperatures started to approach freezing, we did start to get cold – but here, the mat was the culprit, not the bag. Upgrading to a warmer mat (in our case, a NEMO Tensor Insulated pad, with an R-value of 4.2) hugely extended the viable temperature range of the Cloud 800 20F. I was really skeptical with the zipper-less design of the bag but it proved to be a non-issue. It's quite a warm bag but I'm generally a warm sleeper so I may not the be the best gauge for that, but it seems to do the job well in that regard.