Rab Ionosphere 5 Sleep Mat

A lightweight insulated sleeping mat for alpinists and expedition adventurers who need maximum warmth without sacrificing packability.

The Rab Ionosphere 5 Mat is engineered for cold-weather performance, combining advanced insulation and heat-reflective technology to keep you comfortable when temperatures drop.

Constructed with Stratus™ R synthetic insulation and TILT reflective film, this mat traps air and reduces radiant heat loss for an impressive warmth-to-weight ratio. The outer uses 20D recycled polyester for low weight, while the 30D recycled polyester base adds durability. With an R-Value of 4.8 and 8cm thickness, it provides excellent insulation and cushioning for demanding mountain conditions.

Its tapered mummy shape saves weight, and oversized outer chambers help keep you centred through the night. The low-profile two-way valve makes inflation and deflation simple, and the included pump sack ensures hygienic, rapid setup. A roll-away stuff sack and repair kit complete the package. Made with recycled materials, this mat reflects Rab’s commitment to sustainability without compromising performance.