Thermarest NeoAir X-Therm

Cascade Designs

  • The NeoAir® X-Therm™ offers more warmth per gram than any other air mattress in the world. It's the lightest mattress to deliver full "EN rated" warmth for your Zenbivy Bed (or any other EN rated sleeping bag). Gram counters will love the standard tapered shape, but we think it is best with the bed-like rectangular (MAX) shape. It does have that “crinkly sound” as a tradeoff for the low weight, but the Zenbivy Sheet tends to muffle it somewhat. If every gram matters, and you want full “EN-rated” warmth, this the the mattress to get.

Size Guide

Complete Your Bed

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 Fits mattress
Regular-20x72 Regular Quilt + 20x72 Sheet 4’10 to 5’10” up to 175 pounds 20” x 72” up to 3” thick
Large-20x72 Large Quilt + 20x72 Sheet 5’6” to 6’6” up to 225 pounds 20” x 72” up to 3” thick
Large-25x77 Large Quilt + 25x77 Sheet 5’6” to 6’6” up to 250 pounds 25” x 77” up to 3” thick
XL-25x77* Extra-Large Quilt + 25x77 Sheet up to 6’10” up to 325 pounds 25” x 77” up to 3” thick
XL-30x80** Extra-Large Quilt + 30x80 Sheet up to 6’10” up to 350 pounds 30” x 80” up to 3” thick


* XL-25x77 available in Zenbivy Light Bed only

**XL-30x80 available in original Zenbivy Bed only

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