Rab Hypersphere

The Rab Hypersphere uses 650 fill power European goose down, which offers exceptional warmth-to-weight performance. While down is highly efficient, it is critical to use the included pump sack to inflate the pad; this prevents moisture from your breath from entering the chambers and compromising the insulation's loft.

Yes. With a 10 cm thickness, this pad provides ample cushioning to prevent you from bottoming out, even if you sleep on your side. The raised edge chambers also help keep you centered on the pad throughout the night.

An R-value of 9.5 indicates extreme thermal resistance, making this pad suitable for the coldest winter conditions and frozen ground. It is designed specifically for four-season use where retaining body heat is your primary concern.

The pad includes a dedicated pump sack, which is the most efficient way to inflate a high-volume pad like this. It allows you to fill the chambers quickly without needing to blow into the valve manually, which also keeps the interior dry.

The 20-denier polyester is chosen to balance weight savings with durability. While it is lightweight, it is robust enough for standard camping use, though you should always clear your tent site of sharp debris like sticks or rocks before laying it down.

The Rab Hypersphere comes with a repair kit included. It is a good practice to keep this kit in your stuff sack so you can patch minor leaks immediately if they occur during a trip.