Mummy bags are warm and light, but they constrict your natural movement.  Backpacking quilts solve the problem because they sleep comfortably like your bed at home.

The mummy bag has finally met its match.

Watch to see how a Zenbivy Bed can transform your backcountry sleep experience.

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sleep in any position you want.  side, back or stomach.  The Zenbivy Bed allows freedom of movement no matter what position you choose to sleep in.

Sleep in any position - just like your bed at home

Did you know that its impossible for a quarter of us to achieve our natural sleep position in a mummy bag?  The Zenbivy Bed is designed to allow natural sleep and effortless transitions between the 6 most common sleep positions. So whether you're a Fetus sleeper (41%), or a Log (15%), Yearner (13%), Soldier (8%), Freefall (7%) or Starfish (5%), you can sleep however you want in a Zenbivy Bed--just like your bed at home. 

The Zenbivy Bed is as warm and as light as a mummy bag, but has zippers on both sides and is larger and more comfortable, with a separate backpacking quilt that sleeps like your bed at home.

"Hybrid" sleeping bags (bags that integrate the mattress) have always been a compromise.  The idea seems simple:  just remove the weight that is crushed underneath you in a mummy bag (and is thus rendered thermally useless), and re-alloate that weight to address the mummy bag's inherent constriction and lack of versatility.  But combining a sleeping bag with a mattress tends to create its own constriction by pinning you to the mattress.  To address this, hybrid bags tend to be larger and less thermally efficient.  And, you guessed it, heavier.  The Zenbivy Bed is the first hybrid sleeping bag that matches a mummy bag in warmth/weight ratio while eliminating constriction and excelling in a much wider range of temperatures.

sleep like a god in the backcountry with the Zenbivy Bed

Why be entombed in a mummy sleeping bag when you can sleep like a god?


The 2 piece design allows the ultimate in versatility.  From car camping to backpacking, the separate quilt allows you to go anywhere in comfort.

2 Piece Design

The two piece design provides unprecedented versatility so a single bag can take you more places.  From hammock to hostel, the backpacking quilt is useful on its own, even if you don't use it separately on ultralight trips.  The Zenbivy sheet addresses a quilts inherent disadvantages, converting it to a full EN rated sleeping bag thats as light and warm as any mummy bag.

The Zenbivy Bed is a warm blanket you can take with you anywhere for comfort in any season.

Lots of bags work when its cold.  Or when its warm.

The Zenbivy Bed is not a "bag", and that allows it to adapt to temperatures better than any sleeping bag can. Open it up and use it like a blanket when its warm. As it cools down, zip up the footbox to shut down drafts while maintaining the "blanket top" so it still sleeps like home. Even colder? "Tuck" in the sides with the zippers and pop your head and arms under the hood, and you are in a full EN rated (23ºF limit) sleeping bag thats as snug as any mummy.  Finally, one comfy bag for all seasons.

Just as effective as a comforter in the back of your truck as it is in the deep backcountry.

The quilt is a comforter.

At its core, the Zenbivy Bed is a backpacking quilt. While quilts are generally favored by the ultralight crowd, they're also familiar and comfortable, since you interact with them like normal bed covers in your sleep.  

With regular covers, your movement is more natural, so you avoid the twisting and nylon-suffocation of a confining "sleeping bag." This results a more restful night sleep. 

So while quilts may have been invented for backpacking, their comfortable design means you can ditch that heavy rectangular bag while car camping, and versatile enough for so much more.

At 2 lbs 5 oz, it's as comfortable in your pack as it is in your tent.

Hybrid sleeping bags were never known for being light and compact. Those days are over. The Zenbivy Bed weighs in like a mummy and stuffs down to 5 liters.  Plus, the sheet can be left behind to make it a true ultralight quilt on its own (1 lb 9 oz size R; 1 lb 12 oz size L).

You no longer have to fear the wet.

Conventional wisdom would have us believe that synthetic insulations outperform down in wet conditions.  But conventional wisdom is wrong. While it is true that synthetics will insulate better than down when they are wet, its also true that synthetics will soak up water, while down is naturally hydrophobic.  Its simply much harder to get a down bag wet. And with the recent invention of water-resistant down, that's even more true than ever.

Zenbivy Beds use premium 700 fill power HyperDRY™ fluorocarbon-free water-resistant down from Allied.  This is the best down you can get, is sourced according to RDS standards (Responsible Down Standard), and currently tests over 80% longer than other water resistant down on the market in industry standard DWR shake test.  Tested for both PFOA and PFOS.

Uncommon fabrication

Its rare to see 50denier/20denier fabrics combined in a sleeping bag.  Most big brands match fabric weights and put the coolest looking one on the outside.  Zenbivy is different.  Our liners use a relatively large 50 denier polyester yarn woven into Pongee, a weave originally created for silk linens to provide ultimate softness. It also provides that intangible warmth to the touch. Our shell fabrics are made of super-soft and very light 20 denier nylon with simple Taffeta weave that mirrors the softness of the liner in the lightest way possible.  The result is category-defining softness and comfort at the lowest possible weight.

Sleeps like your bed at home. Anywhere.

The Zenbivy Bed

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Questions about why its better?

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We'll respond within 1 business day, usually sooner. We'd love to hear your thoughts and share more about why we think the Zenbivy Bed is the hybrid design that will finally obsolete the old-school sleeping bag.

Size Guide

Unlike mummy bags, there is no thermal disadvantage to a larger size Zenbivy Bed because it is always free to wrap snugly around you. So bigger is always more comfortable and just as warm.  If you are an "active" sleeper or have a "wide" sleeping position, you may want to size up to sleep naturally.  When in doubt, size up.

Size Description Fits Height Fits Weight Quilt Dimensions (flat) Fits mattress Thermarest® size Dry Sack size Compressed Size
20R 20” Sheet + Regular Quilt 4’10 to 5’10” 75 to 175 pounds 78” x 54” 20” x 72” up to 3” thick Regular 7-10 liters 5 liters
20L 20” Sheet + Large Quilt 5’6” to 6’6” 125 to 225 pounds 86” x 58” 20” x 72” up to 3” thick Regular 7-10 liters 5 liters
25L 25” Sheet + Large Quilt 5’6” to 6’6” 175 to 275 pounds 86” x 58” 25” x 77” up to 3” thick Large 7-10 liters 5 liters