Flextail Zero Mattress R05 Mummy L inflatable mattress (orange), Flextail

Flextail Zero Mattress R05 Mummy L (orange)

The Flextail Zero Mattress R05 Mummy L is an ultra-light, high-end inflatable mattress designed for demanding outdoor enthusiasts. With an R-value of 6.0, it provides excellent insulation from cold ground and comfortable sleep even in temperatures as low as -18°C (comfort) and -26°C (limit). Its ergonomic mummy design, thickness of approximately 10 cm, multi-layer insulation, and durable 20D Ripstop Nylon fabric with TPU coating combine lightness, durability, and excellent thermal insulation. It is a reliable choice for trekking, camping, mountain expeditions, and winter overnight stays in the field.

Warmth throughout the night – R-value 6.0 insulation

One of the biggest advantages of the Flextail mattress is its high R-value 6.0 insulation. In practice, this means effective protection against heat loss to the ground – crucial when sleeping in the mountains, on snow, or during the cold seasons. The mattress ensures comfortable sleep even at temperatures as low as -18°C, and its usage limit reaches -26°C, making it an excellent choice for year-round outdoor trips where reliable insulation and stable sleep are important.

Ergonomic Mummy shape – less weight, more warmth

The specially designed Mummy profile adapts to the user's body shape, reducing unnecessary surface area and improving insulation efficiency. This design reduces weight and volume when packed, while helping to keep warmth closer to the body. The mattress is 185 cm long and 51 cm wide, providing comfortable support for the entire body while remaining compact in a backpack. This solution will be particularly appreciated by minimalist travelers, for whom every gram of equipment counts.

U-shaped air chambers – stability and sleeping comfort

The modern design with U-shaped air chambers ensures even weight distribution and stable support during sleep. Thanks to this arrangement, the mattress adapts to the user's position while maintaining adequate elasticity. The thickness of approximately 10 cm effectively insulates against uneven ground, such as stones, branches, or hard soil, making sleeping outdoors much more comfortable and restful.

Advanced 7-layer thermal insulation

The R05 model features an advanced multi-layer construction that significantly improves thermal insulation properties. The system consists of several interacting layers – durable 20D Ripstop Nylon, a tight TPU coating, a special aluminum heat-reflective layer, and an insulating space with filling that traps air inside the chambers. As a result, the heat generated by the body is effectively reflected and retained, which limits its escape to the cold ground and ensures comfort even in very cold conditions.

Durability for expeditions – 20D Ripstop Nylon material

The mattress is made of lightweight but extremely durable 20D Ripstop Nylon, which has been designed for demanding outdoor conditions. The special Ripstop structure prevents any damage to the material from spreading, which significantly increases its durability. An additional TPU coating improves airtightness and moisture resistance, allowing the mattress to perform better in contact with wet ground or dew.

Air tightness confirmed by tests – 4S standard

Each mattress is tested according to the rigorous 4S Testing standard, which includes a series of long-term quality tests. During the tests, the pressure is checked for 48 hours, the stability of the air volume in the chambers and changes in temperature inside the mattress during use. This ensures that the mattress will retain its properties during long trips and repeated use.

Quick inflation and convenient valve operation

The mattress is equipped with a one-way TPU valve, which makes pumping and deflating much easier. The valve design prevents air from flowing back during pumping, making the whole process faster and more comfortable. In practice, this means less time spent preparing your sleeping area and more time to rest after a day on the trail.

Compact when packed – perfect for a backpack

When folded, the mattress takes up very little space. Its transport size is approximately Ø13 × 23 cm, which is roughly the size of a small bottle. This means it fits easily into a trekking backpack, bikepacking bag, or expedition gear. Its compact design and low weight make it a great choice for lightweight and ultralight travelers.

Four seasons, one reliable mat

The combination of high insulation, durable materials, and ergonomic design makes the Flextail Zero Mattress R05 Mummy L perfect for year-round expeditions. Whether you're planning a summer trek, an autumn camping trip in the mountains, or a winter night in a tent, this mattress will provide stable support, protection from the cold, and a comfortable night's sleep. It's the perfect solution for those who want to sleep comfortably even where civilization ends.

Included:

• Inflatable mattress
• Storage bag