OUTDOOR
2025.09.14
【Autumn Climbing】Repair kit can fix small scratches! Super insulated air mattress for a good night's sleep until morning
The heat is gradually easing, marking the arrival of the season for enjoying hiking and climbing. If you want to try serious climbing, make sure to carry a sleeping mat that ensures a good night’s sleep.
High-performance mat with an R-value of 9.4 according to international standards ASTM.
The outdoor brand "FLEXTAIL" has launched the "Tiny Sleeping Pad," an air mattress with top-class R-value. If you want to recover from fatigue during your mountain climbing with a good night's sleep, be sure to check it out.

First, it's important to note the term "R-value." This is an insulation performance index established by the American Society for Testing and Materials (ASTM), a global standardization organization, and it is used by outdoor manufacturers around the world.
Generally, an R-value of 4.0 or higher is considered standard for early winter, so hearing about an R-value of 9 or above shows just how impressive the insulation performance of this mat is. It effectively blocks cold air with top-notch insulation performance, preventing body heat loss even in high-altitude conditions during the harsh winter months.
A convenient electric air pump is included.

A convenient 33g compact air pump is included, allowing the mat to become fluffy in about one minute without any hassle. Despite its small size, the pump has an air flow rate of 100L/min and an air pressure of 3kPa, enabling it to automatically inflate to a firm state.
High performance yet lightweight and compact.

In the mountains, unexpected damage from rocks and branches can strike your gear. However, with ripstop fabric, you don't have to worry in such harsh environments. Even if small scratches occur, the included repair kit minimizes the risk of significant tearing.

Despite its high performance, it weighs only about 500g and has a very compact storage size of 28×Φ10cm. It fits easily into the gaps of a backpack and won't be a burden during vertical trekking or minimal equipment mountain trips.
Of course, it can be used for camping as well, so it might be a good idea to buy it in preparation for winter camping.

Product Name / Tiny Sleeping Pad R09 (Mummy Type)
Price / 37,200 yen
Size / Length 183 × Width 51 × Thickness 9 cm, Storage Size 28 × Φ10 cm
Weight / 496 g / ±7%
R-Value / 9.4
Product Name / Tiny Sleeping Pad R05 (Regular Type)
Price / 27,900 yen
Size / Length 183 × Width 65 × Thickness 7 cm, Storage Size 28 × Φ13 cm
Weight / 733 g / ±7%
R-Value / 5.6
Product Name / Tiny Sleeping Pad R03 (Regular Type)
Price / 23,000 yen
Size / Length 183 × Width 65 × Thickness 7 cm, Storage Size 28 × Φ10 cm
Weight / 539 g / ±7%
R-Value / 3.5
●YOCABITO
- *Climbing air mattress
- Kazuma Tanaka
- camping gear
- sleeping mat
- winter camping
- winter mountain climbing