Flex 3D Mattress
The Flex™ 3D Mattress is the ultimate ultra-comfortable basecamp mattress.
It features the same 4-way stretch knit top that makes our original Flex™ Mattress so supportive and soft. The 3D shape makes it feel just like your home mattress, with a completely flat top and vertical side walls, packing 3 inches of self-inflating horizontally-cored foam to give you the most comfortable night's sleep possible.
If you're a backpacker looking to upgrade their mattress for car camping trips or if you're simply looking for maximum comfort at camp, the Flex™ 3D Mattress is an ultra-comfortable and luxurious addition to your gear closet. Available in 198 x 66 cm, 198 x 76 cm, and a double-wide 198 x 132 cm.
Includes the Flex™ 3D Mattress, storage/inflation sack, and repair kit
R-value: 7.4
Weight
Weight
Size
Size
Materials
Materials
Flex 3D Mattress - L 66 x 198cm / Grey is backordered and will ship as soon as it is back in stock.
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Features
Features
3D Shape — The completely flat top and vertical side wall make the Flex™ 3D Mattress feel like a real mattress. The top is usable from edge to edge and it cradles you like your mattress at home.
4-Way Stretch Top — The 4-way stretch fabric allows this mattress to “flex” with your shape and movement, so the top feels softer and more supportive than other camp mattresses—even at firm air pressures.
Horizontally-Cored Foam Insulation — Horizontally-cored foam eliminates the cold spots found on most vertically-cored mattresses and delivers an R-value of 7.
Fast Inflation — The included inflation sack is sized perfectly for the fastest inflation time and doubles as storage for the mattress.
Reversible 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. Then pop the "deflation" valve side back in and the air stays out as you continue to roll.
Specs + Materials
Specs + Materials
R-value: 7
Weight
196 x 64 cm: 1.87 kg
203 x 76 cm: 2.13 kg
196 x 127 cm: 3.49 kg
Inflated Size
196 x 64 cm: 66 x 198 x 8 cm
203 x 76 cm: 76 x 198 x 8 cm
196 x 127 cm: 132 x 198 x 8 cm
Packed Size
196 x 64 cm: 33 x 20 cm
203 x 76 cm: 38 x 20 cm
196 x 127 cm: 66 x 20 cm
Flex™ 3D Mattress Materials
Top: 4-way stretch 50 d polyester knit
Bottom: 75 d polyester taffeta
Foam: Urethane foam
Explore the Features
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R7 warmth
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Exclusive 4-way stretch top
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3D Shape
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Reversible high-speed valve
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Included inflation storage bag

Inflation Storage Bag
| Model | Weight | Inflated Dimensions | Packed Size | Insulation | |
|---|---|---|---|---|---|
| Flex Air Mattress | M 51 x 183 cm | 567 g | 51 x 183 x 8 cm | 16 x 8 cm | R 4.8 |
| MW 64 x 183 cm | 680 g | 64 x 183 x 8 cm | 20 x 8 cm | ||
| L 64 x 198 cm | 709 g | 64 x 198 x 8 cm | 20 x 9 cm | ||
| Rect 64 x 183 cm | 737 g | 64 x 183 x 8 cm | 20 x 8 cm | ||
| Rect 64 x 198 cm | 794 g | 64 x 198 x 8 cm | 20 x 9 cm | ||
| Ultralight Mattress | M 51 x 183 cm | 482 g | 51 x 183 x 8 cm | 16 x 8 cm | R 4.8 |
| MW 64 x 183 cm | 595 g | 64 x 183 x 8 cm | 20 x 8 cm | ||
| L 64 x 198 cm | 623 g | 64 x 198 x 8 cm | 20 x 9 cm | ||
| Rect 64 x 183 cm | 680 g | 64 x 183 x 8 cm | 20 x 8 cm | ||
| Rect 64 x 198 cm | 709 g | 64 x 198 x 8 cm | 20 x 9 cm | ||
| Light Mattress | M 51 x 183 cm | 650 g | 51 x 183 x 8 cm | 18 x 10 cm | R 5.2 |
| MW 63 x 183 cm | 680 g | 63 x 183 x 8 cm | 23 x 10 cm | ||
| L 63 x 198 cm | 770 g | 63 x 198 x 8 cm | 23 x 13 cm | ||
| XL 76 x 203 cm | 1040 g | 76 x 198 x 8 cm | 25 x 13 cm | ||
| Flex™ Mattress | M 51 x 183 cm | 964 g | 51 x 183 x 4 cm | 25 x 15 cm | R 5.0 |
| MW 63 x 183 cm | 1100 g | 63 x 183 x 4 cm | 33 x 15 cm | ||
| L 63 x 198 cm | 1220 g | 63 x 198 x 4 cm | 33 x 20 cm | ||
| XL 76 x 198 cm | 1670 g | 76 x 198 x 4 cm | 38 x 20 cm | ||
| Flex™ 3D Mattress | L 66 x 198 cm | 1870 g | 66 x 198 x 8 cm | 33 x 20 cm | R 7.4 |
| XL 76 x 198 cm | 2130 g | 76 x 198 x 8 cm | 38 x 20 cm | ||
| Double Flex™ 3D Mattress | DL 132 x 198 cm | 3490 g | 132 x 198 x 8 cm | 66 x 20 cm | R 7.4 |






