On the chart below, locate your height and overarm measurement. To get your overarm measurement, stand with your hands by your sides and measure around the broadest part of your chest and arms.
Regular, Large, and XL refer to the quilt size 20", 25", and 30" refer to the sheet size
If you are an "active" sleeper or have a "wide" sleep position, consider sizing up to accommodate your sleep style.When in doubt, size up. Unlike mummy bags, there's no thermal disadvantage to a larger size Zenbivy because the quilt is always free to wrap snuggly around you. Bigger is always more comfortable and just as warm.
Sheet & Mattress Sizing
Zenbivy sheets are designed to fit most standard size mattresses on the market, in both rectangular and tapered styles.
Dry Sack Sizing
Find your Bed on the image below and match it to its recommended Dry Sack size. Don't worry, with the recommended size there will still be room to throw in your Zenbivy pillow and even a down jacket.
You can expect your Bed to compress down to abouthalfthe size of its recommended Dry Sack.Example: 7L compresses down to 3-4L, 10L down to 5L, etc
The only ultralight, all-season mattress that is quiet, easy to inflate, and WARM. The Light Mattress is built for undisturbed sleep with 180g of fully baffled synthetic insulation. No crinkly chip bag sounds and no cold spots! The Light Mattress is compact and lightweight, making it ideal for backcountry adventures.
The included Inflation Dry Sack is designed to make set up a breeze. Long gone are the lightheaded days of blowing up your mattress by breath. The fully-welded Inflation Dry Sack allows for easy inflation in under a minute.
Includes the Light Mattress, Inflation Dry Sack, and repair kit
All-Season Warmth — Only mattresses with an R-value 5 or greater will meet the thermal performance of EN-rated sleeping bags. Most mattresses on the market today that are advertised as “3-season” do not provide the warmth required to match EN-rated bags. The Zenbivy Light Mattress has an R-value 5+ for EN-matched performance and all-season warmth: no cold spots.
Quiet Comfort — No crinkly chip bag sounds here! With 180g of fully baffled synthetic insulation, the Zenbivy Light Mattress is quiet and built for undisturbed sleep.
Fast Inflation — The included oversized dry sack is sized perfectly for the fastest inflation time and doubles as fully-welded storage to keep the mattress reliably dry on the trail.
Smart Valve — The one-way reversible valve keeps air in while inflating and allows for customizable comfort with its slow-deflation "button”. When it's time to pack up, the entire valve pops out for instant, hassle-free deflation.
Light & Soft — The soft 20D polyester taffeta shell is comfortable enough to sleep on directly while still being durable and lightweight, making it the ideal mattress for backcountry trips.
R-value: 5 (Note that only mattresses with an R-value of 5 or greater will deliver full temperature rating performance from EN-rated sleeping bags)
Weight 20x72: 1 lb 5 oz (0.59 kg) 25x72: 1 lb 8 oz (0.68 kg) 25x77: 1 lb 9 oz (0.71 kg) 30x80: 2 lb 2 oz (0.96 kg)
Inflated Size 20x72: 20” x 72” x 3” (51 x 183 x 8cm) 25x72: 25" x 72" x 3" (63 x 183 x 8cm) 25x77: 25” x 78” x 3” (63 x 198 x 8cm) 30x80: 30" x 78" x 3" (76 x 198 x 8cm)
Packed Size 20x72: 7” x 4” (18 x 10cm) 25x72: 9" x 4" (23 x 10 cm) 25x77: 9” x 5” (23 x 13cm) 30x80: 10" x 5" (25 x 13cm)
Mattress Materials Top & Bottom: 20D Polyester Taffeta Insulation: 180g 3D XD Synthetic
180g of fully-baffled insulation is considered excessive when compared to most air mattresses but actually it's the minimum required to achieve R-value 5+, allowing you to get full EN rated performance from your sleeping bag.
Built for Undisturbed Sleep
With a shell made of 20D polyester taffeta and 180g of fully-baffled insulation inside, you can say goodbye to the “space blanket crinkle” synonymous with most ultralight air mattresses.
The reversible valve keeps the air in while inflating and its slow-deflation "button" lets you dial in your exact comfort level. When it's time to pack up, the entire valve pops out for fast, hassle-free deflation. Snap it back in in "deflate" mode and the air stays out as you continue to roll.
Included Inflation Dry Sack
Long gone are the lightheaded days of blowing up your mattress by breath. The Light Mattress comes with a fully-welded Inflation Dry Sack for waterproof storage and easy manual inflation in under a minute. Just snap it onto the mattress valve and push the air through.
4.7Based on 52 Reviews
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Off road motorcycling riding with camping in Wyoming (1,400 miles) and 5 night in the bag was a real-world test that confirmed my choice of this system, in the 10 degree version and XL size (I am 6'2") was right. I slept through every night which was not at all expected, because I am old.
Tip: sleep naked and in a mummy fleece as a 'sheet.' It's way comfortable and protects the system's materials from your body.