Size Guide
The quilt is sized to fit you. The sheet is sized to fit your mattress.
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CLIP quilts and sheets are sold separately.
Sizes can be mixed & matched to create the fit that’s right for you and your mattress. All clip quilts are compatible with all clip sheets regardless of size, style, or temperature rating.
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ZIP quilts and sheets are sold together.
Your mattress may determine what size quilt you get. For example, if your mattress requires a 30” sheet you will need to get the XL 30” ZipBed which comes with an XL quilt.
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.
Quilt Sizing
On the chart below, locate your height and overarm measurement. To get your overarm measurement, stand with your arms hanging relaxed by your sides and loosely measure around the broadest part of your chest and arms.
Sheet Sizing
Zenbivy sheets are designed to fit most standard size mattresses on the market, both rectangular and tapered styles. Sheets fit rounded-edge mattresses up to 4” thick and 3D-style mattresses up to 3.5” thick.
Quilt Dimensions
Backpacking quilts are measured by the cut-fabric dimensions. Filled and lofted quilts will be shorter/narrower. On average:
- 25°F quilts are approximately 2” shorter in both directions, for all sizes
- 10°F quilts are approximately 4” shorter in both directions, for all sizes
Convertible quilts are 6” longer when open/flat.
Circumference
The maximum circumference around your shoulders/hips/feet for each size combination when the quilt is attached to the sheet.
Dry Sack Sizing
Both the quilt and sheet will fit in the recommended Dry Sack size and there will still be room to throw in your Zenbivy SoftTop™ Pillow or a down jacket.
You can expect your bed to compress down to about half the original size of the Dry Sack. Example: 7L compresses down to 3-4L, 10L down to 5L, etc
Ultralight Sheet
Description
Description
Starting at a mere 76 grams, the Ultralight Sheet is the lightest way to block all drafts and eliminate all constriction. You'll never opt for constricting quilt straps again.
Specifications
Specifications
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Weight
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Compatible With
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Sheet Sizing
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Quilt Dimensions
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Fill
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Fill Weight
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Fabric
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Recommended Dry Sack Size
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Includes
New to Zenbivy?
Discover how our patented 2-piece design blocks drafts without restricting movement—so sleeping outdoors feels just like your bed at home.
Ultralight Quilt - -4ºC Ultrasonic Muscovy™ 900FP / Large / Black/Red (Discontinued) is backordered and will ship as soon as it is back in stock.
Explore the Materials
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10D Pertex® Quantum
To maximize comfort, Zenbivy Ultralight Sheets use premium “full-dull” Pertex® Quantum. Feather-light and soft to the touch, it's fabric that feels like fabric, not a trash bag.
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Lightweight Clip Attachments
Our colour-coded clip closures are nearly weightless and proven draught-free.
Explore the Fills
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Ultrasonic Muscovy™ 900FP
The pinnacle of natural performance, Ultrasonic Muscovy™ from SOFTIE delivers uncompromised loft, durability, and stability. Washed using a patented Ultrasonic Washing process, it exceeds industry standards of cleanliness and preserves the down’s pure, additive-free loft for long-term performance.
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ExpeDRY™ Muscovy 900FP
ExpeDRY™ Muscovy from ALLIED Feather + Down combines the unmatched loft and durability of Muscovy down with next-generation, water-resistant technology. Using a chemical-free bonding of non-toxic gold particles, ExpeDRY™ accelerates evaporation so insulation stays drier and dries up to 50% faster than traditional chemically-treated downs.
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ExpeDRY™ Goose 900FP
ExpeDRY™ Goose from ALLIED Feather + Down combines the trusted, proven performance of goose down with next-generation water-resistant technology. Using a chemical-free bonding of non-toxic gold particles, ExpeDRY™ accelerates evaporation so insulation stays drier and dries up to 50% faster than traditional chemically-treated downs.
For those who prefer the proven reliability of goose down—or are sensitive to duck down—this premium fill delivers the cleanest, most time-tested performance in the lineup.
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PrimaLoft® Gold Synthetic
PrimaLoft® Gold sets the benchmark for synthetic performance—delivering the same warmth as standard PrimaLoft® at a lighter weight. With ultra-fine fibres that efficiently trap heat, it offers down-like warmth-to-weight for ultralight performance without compromise.
Complete Your Ultralight Bed Set Up
Grab a mattress, pillow, and dry sack to complete your Zenbivy Ultralight set up.
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![Flex™ Air Mattress]()
![Flex™ Air Mattress]()
From £209.95Unit price /Unavailable -
![Ultralight Mattress]()
![Ultralight Mattress]()
From £189.95Unit price /Unavailable -
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£19.95Unit price /Unavailable
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![Zip Sack]()
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![Ditty Dry Sack]()
![Ditty Dry Sack]()
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