Rab Hypersphere Sleep Mat

Absolutely. With an R-value of 7.3 and 800FP goose down insulation, this mat is specifically engineered for high-altitude and arctic environments where extreme cold is the primary concern.

The included pump sack connects to the mat's valve, allowing you to fill the sack with air and push it into the mat. This method is faster than manual inflation and prevents moisture from your breath from entering the mat, which is critical for maintaining the down insulation's performance.

While the 20D recycled polyester fabric provides a durable barrier, down can lose loft if it gets wet. Using the provided pump sack is essential to keep moisture out, and you should always store the mat unrolled and dry between expeditions to protect the insulation.

The hybrid shape is a strategic compromise between a mummy and a rectangular pad. It tapers to save weight while keeping the width where you need it most, and the oversized outer chambers help keep you centered on the mat throughout the night.

It is built with 20D recycled polyester, which balances weight savings with necessary durability. While it is tough enough for most alpine environments, you should still clear your tent site of sharp rocks or debris to avoid punctures, and a repair kit is included just in case.