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Sierra Designs Backcountry Bed 600 3-Season Review

A super unique design that brings unparalleled comfort to the backcountry albeit with some (though not terrible) weight and packed volume penalties
Sierra Designs Backcountry Bed 600 3-Season
Photo: Sierra Designs
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Price:  $300 List
Pros:  Mega comfortable, offering a near "bed-like" experience, excellent temperature regulation, complete unencumbered upper extremity movement
Cons:  Internal fabric isn't as "cozy" feeling as other bags, heavy, not as compressible as other similarly rated models
Manufacturer:   Sierra Designs
By Ian Nicholson ⋅ Review Editor  ⋅  Nov 24, 2016
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  • Warmth - 20% 8
  • Total Weight - 20% 4
  • Comfort - 20% 10
  • Packed Size - 15% 6
  • Versatility - 15% 9
  • Features & Design - 10% 9

Our Verdict

The 3-season Sierra Designs Backcountry Bed 600 bag offers a truly unique design, creating one of the most comfortable and bed-like feels of any sleeping bag we have tested. The Backcountry Bed features no zippers, toggles or Velcro flaps of any kind, but instead offers a large "U"-shaped opening that is covered by a down flap. This down flap acts as a quilt. The quilt not only helps regulate temperature extremely well, but it also offers unmatched freedom of movement for the user's upper extremities, making tummy-sleeping as comfy as it gets.

This version of the Backcountry Bed is no longer in production. Sierra Designs has revamped their entire line of Backcountry Beds and Quilts. See our Sierra Designs Backcountry Bed 700 for one of their updated offerings.

For all its comfort advantages and range of temperature versatility, it is a little on the heavier side, and does not offer supreme compressibility. While we thought the Backcountry Bed was super comfortable, our testers found the Nemo Salsa won overall, offering more comfort for "high-knee" sleepers. The Salsa was around a pound lighter and much more compressible. That said, the Backcountry Bed 600 for 3-season use remains a rad option for someone seeking its unique advantages that few other bags can even think of offering.

Our Analysis and Test Results

Performance Comparison

The Backcountry Bed is a unique bag featuring no zippers, Velcro...
The Backcountry Bed is a unique bag featuring no zippers, Velcro taps, or toggles, creating a super comfortable almost bed-like feeling.
Photo: Ian Nicholson


The 3-season Backcountry Bed 600 was slightly warmer than average among 30°F bags on the market; we feel its rating is likely closer to 25°F (instead of 30°F). In fact, our testing team thought this bag was warmer than all of the other 30°F bags we tested, with the exception of the Western Mountaineering MegaLite. The Backcountry Bed was determined to be warmer than the Marmot Phase, Sea to Summit Spark III, or Kelty Tuck 20 via our side-by-side testing; it was also slightly warmer than the 20° F rated The North Face Cats Meow.

The Backcountry Bed proved warmer than most of the 30F bags we...
The Backcountry Bed proved warmer than most of the 30F bags we tested and likely checks in with a rating closer to 25F. We loved how nicely the down flap acted like a comforter to snuggle up around our torso and necks on colder evenings.
Photo: Ian Nicholson

This contender uses 24 ounces of 600-fill treated duck down. While it might be defined as a lower quality fill, it is actually by far the most insulation (by weight) used out of any of the bags we tested. This fill is necessary to help keep the bag rated to around 25-30°F, while still ensuring that it feels spacious.


At 3 lbs 1 oz, the Backcountry Bed is on the heavier side of bags we tested. It doesn't use any zippers, toggles, or velcro flaps of any kind. Its weight derives from the volume of insulation and fabric used on this spacious and uniquely designed bag. With that in mind, it's worth noting that the Backcountry Bed was around a pound heavier than most other models.

If you love this bag but wish it was lighter, it is worth noting that Sierra Designs makes the Backcountry Bed 800 3- Season. It is a nearly identical, but uses a lighter weight 20D shell (instead of the 600's 30D) and a higher quality fill that makes it nine ounces lighter (at 2 lbs 8 oz); it's also $100 more expensive, ringing in at $400.

The Backcountry Bed 600 3-season, shown here the third from the...
The Backcountry Bed 600 3-season, shown here the third from the left, isn't super packable. However, it is more compressible than a handful of 20F bags and can be made 15%-35% smaller with an aftermarket compression. Its included stuff sack doesn't do a great job at compressing the bag.
Photo: Ian Nicholson

Packed Size

For its warmth, the Backcountry Bed 600 doesn't offer a very small packed size; it was one of the last compressible bags in our review. The only bag that didn't pack down nearly as small was the Kelty Tuck 20. The Kelty Cosmic Down offers a comparable compressed volume.

The three most spacious and comfortable sleeping bags in our review...
The three most spacious and comfortable sleeping bags in our review. The Sierra Designs Backcountry Bed (left), Nemo Salsa 30 (center), and Western Mountaineering MegaLite (right). The Backcountry Bed offered the most freedom of movement in our upper extremities, but these other two bags offered a little more leg room, especially for side and tummy sleepers who like to sleep with a knee up.
Photo: Ian Nicholson


Spaciousness and comfort are why you buy the Backcountry Bed. From the waist up, it literally feels like you're in a bed. It's super comfortable; you can flail your arms however you like, roll over, and just plain be cozy. The down flap acts like a comforter and is quite nice to pull up around your body on colder nights. There is an overlap in the bottom of this bag that allows for folks to sleep inside the back, but with their feet exposed, adding further potential to regulate temperature.

The Backcountry Bed 600 3-season offers pretty unbeatable upper body...
The Backcountry Bed 600 3-season offers pretty unbeatable upper body movement. Its unique design allows the user to sleep in pretty much any position they desire for their upper body.
Photo: Ian Nicholson

From the waist down, the Backcountry Bed is spacious; however, our high-knee sleeping testers actually preferred the Nemo Salsa 30. While it didn't offer the same freedom and unencumbered movement of upper extremities, it had more leg room. If you are a belly sleeper, this is one of the best bags for you. It lets you sleep tummy-down, or slightly on your side, with your arms wrapped around your pillow. You can remain outside of the "bag", but still tucked into the comforter/flap.

The exception to this is for folks who sleep on their back or stomach, with one knee straight out to the side. In this case, you'll likely appreciate the Nemo Salsa's dimensions and stretchy seams. The only real knock for comfort on the Backcountry Bed is its internal fabric isn't as "cozy" feeling as other bags we tested. But in the end, folks will love this bag if they dislike traditional mummy-style bags, are "thrashing" sleepers, or enjoy sleeping on their tummy.

The many comfort features of the Backcountry Bed.
The many comfort features of the Backcountry Bed.
Photo: Ian Nicholson


The Backcountry Bed isn't super versatile, at least in the traditional sense. It is great for folks who don't like the feel of traditional mummy-style sleeping bags and want to bring that bed feeling into the backcountry. The Backcountry Bed 600 is killer for car camping and most modest backpacking trips, but it's too heavy and isn't compressible enough for most extended backpacking trips or summer mountaineering.

All tucked in under the Down-filled flap/comforter feature on the...
All tucked in under the Down-filled flap/comforter feature on the Backcountry Bed 600 3-Season bag. This flap allowed the best temperature regulation of any bag we tested as well as a comfortable almost bed-like feel.
Photo: Ian Nicholson

On the other spectrum of versatility, this contender does perform well in a wide range of temperatures, offering fantastic ventilation. The upper flap really helps fine tune the amount of warmth, depending on the user and the overnight temperature. Conversely, its spacious cut does allow it to be used with multiple extra layers to increase the warmth, should you find yourself in below freezing temperatures. If it's really cold out and you do move around quite a bit, this bag can feel a little drafty - if the down flap/comforter untucks itself.

On colder nights, we loved the little hand sleeves that not only...
On colder nights, we loved the little hand sleeves that not only keep your hands warm but more importantly, help to keep the down flap in place on the Backcountry Bed 600 3-Season bag.
Photo: Ian Nicholson


This bag is chock FULL of features. It's more or less a wider cut mummy-style sleeping bag. What makes it different is instead of a traditional side-zipper, the top of the bag has a large "U"-shaped opening with an insulated flap. This flap acts as the bag's temperature regulator and performs like a blanket; it can be completely opened up to maximize ventilation, or closed all the way and wrapped around the user's neck to keep the cold out.

This bag does feature a deep hood of sorts; however, most folks using this bag will end up using the hood as a pillow, or pillow holder for all but the coldest nights. There is a pad sleeve on the bottom of the upper portion of the bag to help keep your sleeping pad in place. This is nice, especially considering the volume on the bottom side of the Backcountry Bed is a little thinner than normal.

The Backcountry Bed 600 3-Season is best for folks who like to sleep...
The Backcountry Bed 600 3-Season is best for folks who like to sleep on their backs, sides, or simply don't want to feel the slight restriction of movement associated with most backpacking mummy-style bags.
Photo: Ian Nicholson

Best Applications

This is a sweet bag for car camping or shorter backpacking trips, where weight is less of an issue. However, we know a few backpackers who don't mind carrying a heavier or bulkier bag; they will take it on a wide range of trips because they just plain don't like traditional mummy bags, but still want something lighter than a rectangular bag. This or the Backcountry Bed 800 will hit the sweet spot.


At $300, this contender isn't an amazing deal, but it is a unique bag with several comfort-oriented advantages - which is just what some folks are looking for.


If you are just someone who wants a little more space than what a traditional bag offers, our Editors' Choice Western Mountaineering MegaLite provides noticeably space and still weighs a scant 1 lb 8 oz ($460), while the Marmot Phase also provides excellent value. The Nemo Salsa 30 ($240) is still a pound lighter (2 lbs 1 oz) and many side-sleepers and "high knee" sleepers liked it equally or even better than the Backcountry Bed. However, for unencumbered upper body movement and a truly bed-like feel while camping, it's hard to beat the Backcountry Bed 3-season.

Ian Nicholson