Rab Ultrasphere 5

The Rab Ultrasphere 5 is for fast-and-light enthusiasts who refuse to sacrifice comfort for weight. Designed specifically for thru-hiking and multi-day mountain marathons, this featherlight air mat provides an exceptional foundation for any high-altitude adventure. With an impressive R-Value of 5.5, it is a true four-season contender, capable of handling sub-zero temperatures and frozen ground. Whether you are racing across the Highlands or embarking on a long-distance trek, its tapered mummy shape and minimal pack size make it an essential lightweight camping mat for year-round mountain use.

Durability meets sustainability in the Ultrasphere 5's construction. The outer shell is crafted from a 20D recycled polyester fabric, treated with a fluorocarbon-free DWR to repel moisture effectively. Internally, a TPU coating ensures long-term airtight integrity. What sets this mat apart is the integration of two layers of TILT reflective film. This innovative technology reflects radiant heat back to the body without the weight of traditional bulky insulation. Combined with its recycled polyester structure, these materials create a robust yet incredibly light barrier against the elements, ensuring you stay warm throughout the night.

Every feature of this 8cm thick mat is optimized for efficiency and performance. Weight-saving internal cut-outs trap static air to maintain warmth while keeping the total weight to a mere 345g. The low-profile two-way valve allows for rapid inflation using the included pump sack, preventing moisture from entering the mat. It packs down to a tiny 18x9cm, easily disappearing into a small running vest or trekking pack. Complete with a roll-away stuff sack and a repair kit, the Ultrasphere 5 offers the ultimate balance of packability and technical mountain performance.

Rab Ultrasphere 5 Features

• 20D recycled polyester outer
• 2 layers of TILT reflective film
• Offset weight-saving internal cut outs
• Tapered mummy shape
• Low-profile two-way valve
• Pump sack included
• Roll-away stuff sack with repair kit included