Name: Flex™ Air Mattress
Brand: Zenbivy
SKU: 21591
Price: 153.3 USD
Availability: InStock

We’re Proud To Introduce the New Zenbivy Mattresses!

Flex™ Air Mattress

The revolutionary new Flex™ Air Mattress is the only ultralight air mattress to feature a 4-way stretch top. In combination with the supportive diagonal baffle pattern, there's truly a "wow" moment when you lay on it—an extraordinary comfort difference you have to sleep to believe. Starting at 1 lb 4 oz and delivering EN/ISO-matched warmth, the Flex™ Air Mattress is ultralight backpacking luxury.

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Ultralight Mattress

The uncommonly supportive Ultralight Mattress features the same diagonal baffle structure as our Flex™ Air Mattress but swaps the stretch knit top for an ultralight 20D honeycomb embossed Recycled Polyester Taffeta, bringing the weight down to just 1 lb 1 oz. Two layers of featherlight mylar insulation deliver EN/ISO-matched warmth.

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Flex™ Air Mattress

Revolutionary, Exclusive 4-Way Stretch Top

All other camp mattresses use tightly woven fabrics that do not stretch. These surfaces transfer weight across the mattress and can feel both stiff and “bouncy”. Our new Flex™ Air Mattress features an exclusive 4-way stretch fabric that forms instantly to your shape and movement, both minimizing weight transfer and relieving pressure points.

Supportive Offset Air Cells

The offset air cells create a diagonal baffle pattern that causes the mattress to twist against your body’s natural fold lines rather than collapse into them like horizontal and vertical baffles, resulting in a more supportive mattress.
Flush, High-Speed Valve

The low-profile valve is large for fast inflation and instant dumping of air, and the slow-deflation "button" allows for customizable comfort. Plus, the whole valve is replaceable and repairable should you ever need it.
Included Inflation Sack

Bigger does not mean faster! An inflation sack that's too big is just more material to wrestle. Our slightly oversized ultralight inflation sack (1.0 oz) is optimized for the fastest inflation time. It's quick and easy to use, just couple the inflation sack to the mattress valve and push air through.
Waterproof Storage

The ultralight inflation sack doubles as waterproof storage for your mattress. Twist, stuff, and cinch it shut!
Tapered Shape

The tapered shape saves weight and cuts bulk so it’s more compact and lighter in your pack.
Ultra-Compact

Rolling down to just 6.5" x 3", the new Zenbivy mattresses are ultra-compact and hardly take up any space in your pack.

Learn More About the Materials

Mylar Layers

Mylar is a popular insulation choice for ultralight camp mattresses, but unlike other ultralight mattresses that are crinkly, loud, and provide insufficient warmth, our mattress's mylar layers “float” within to quietly reflect heat and deliver R4.5+ for EN/ISO-matched performance.
Embossed 20D Recycled Polyester Taffeta

Our embossed 20D Recycled Polyester Taffeta is laminated, not coated, making it stronger and more durable than other ultralight mattress fabrics.
Laminated Fabrics

Other mattresses use coated fabrics which can break down over time, making them less durable and, therefore, less reliable. We laminate a PU (polyurethane) membrane to our fabrics. This separate membrane does not break down and the welds are stronger, resulting in a more durable and long-lasting mattress.

A table comparing the facets of 2 products
Facet	Flex™ Air Mattress View details	Ultralight Mattress View details
Weight
Weight	Tapered 20x72: 1 lb 4 oz (567 g) 25x72: 1 lb 8 oz (680 g) 25x78: 1 lb 9 oz (709 g) Rectangular 25x72: 1 lb 10 oz (737 g) 25x78: 1 lb 12 oz (794 g)	Tapered 20x72: 1 lb 1 oz (482 g) 25x72: 1 lb 5 oz (595 g) 25x78: 1 lb 6 oz (623 g) Rectangular 25x72: 1 lb 8 oz (680 g) 25x78: 1 lb 9 oz (709 g)
R-value
R-value	4.8	4.8
Insulation
Insulation	Two layers of mylar foil	Two layers of mylar foil
Packed Size
Packed Size	Tapered & Rectangular 20x72: 6.5" x 3" (16 x 8 cm) 25x72: 8" x 3" (20 x 8 cm) 25x78: 8" x 3.5" (20 x 9 cm)	Tapered & Rectangular 20x72: 6.5" x 3" (16 x 8 cm) 25x72: 8" x 3" (20 x 8 cm) 25x78: 8" x 3.5" (20 x 9 cm)
Fabric
Fabric	Top: 4-way stretch 20D Recycled Polyester knit Bottom: 20D Recycled Polyester Tafetta	Top & Bottom: Embossed 20D Recycled Polyester Tafetta
Includes
Includes	Mattress, waterproof inflation storage sack, and repair kit	Mattress, waterproof inflation storage sack, and repair kit