The Rab Ultrasphere 5 Sleep Mat is an ultralight, packable air mat designed for fast-paced mountain adventures where warmth and low weight are critical. Its innovative construction uses two layers of heat-reflective TILT technology to significantly boost warmth-to-weight by reflecting body heat back toward you, without adding bulk. Offset air chambers trap heat within the structure, delivering reliable insulation and support without relying on heavy, high-volume fills. Comfortable, stable, and highly compressible, it provides an efficient sleep system for thru-hiking, bikepacking, and multi-day mountain objectives.
Features:
- 2 layers of TILT reflective film help reduce radiant heat loss without adding weight or bulk
- 20D recycled polyester outer
- Offset weight-saving internal cut outs to keep warm air static
- R-Value: 5.5
- Thickness: 8cm
- Packed size: 18x9cm
- Tapered mummy shape to save weight
- Low-profile two-way valve for easy inflation and deflation
- Pump sack included for rapid and hygienic inflation
- Roll-away stuff sack with repair kit included
Technical Specifications:
- Weight: 345g/12.2oz (Reg)
- 100% Polyester Inflatable Mattress with down insulation