Rab/Ultrasphere 1.5 Sleep Mat

Minimalist's best solution



Rab is a brand founded in 1981 by British climber Robert Carrington, and produces highly reliable, high-quality items for extreme cold environments and alpine climbing around the world. In particular, the company has a reputation for its advanced technology and attention to detail when it comes to down and synthetic insulation (filling), which is the roots of the company.

We have developed the company's first sleeping mat series, making it possible to have a one-stop experience when combined with sleeping bags. The Ultrasphere 1.5 is an ultralight mat perfect for summer , combining ultralight materials with an offset air chamber construction that traps heat . Ultra-lightweight (350g), high performance (R value 1.3), and minimal pack size (18 x 9cm), it is the perfect solution for minimalists.

The newly developed tapered mummy shape pursues the balance between ultra-lightweight and high performance. By alternating the positions of the holes in the horizontally arranged air chambers, internal air convection is greatly reduced and excellent heat retention is achieved. Body pressure is accurately distributed, and the 8cm thickness makes it very comfortable to sleep on . The soft fabric also reduces the slippage of the sleeping bag. Equipped with a low-profile two-way valve, the included large pump sack quickly inflates the mat, and the stuff sack can be opened and closed from the side for easy access. Due to the tapered mummy shape, Insuration Sheet 00 due to tapered mummy shape Combined with this, it reduces condensation on the sleeping bag that protrudes from the mat, and also has an insulation effect. It is possible to live more lightly.

- R-VALUE 1.3
- 20D recycled polyester TPU coating
-Fluorocarbon - free DWR durable water repellent finish
- A unique structure in which the holes in the partition walls of the chamber inside the lightweight mat are shifted to significantly reduce air convection inside the mat and maintain warm air.
- Light weight with tapered mummy shape
- Low-profile 2-way valve allows for easy inflation and deflation
- Comes with pump sack
- Comes with repair kit
- Roll-away stuff sack included
- Light gray color
- Rab domestic genuine product


Pack size: approx. 18 x 9 x 9cm
Weight: 350g
R-VALUE: 1.3
Materials: Fabric: 20 denier recycled polyester TPU coating included: Stuff sack, pump sack, repair kit