The Rab Ionosphere 5.5 Sleep Mat is engineered with precision to deliver exceptional warmth in a compact size, this insulated air mat is ideal for alpinists and adventurers exploring in winter conditions. With a heat-reflective TILT lining and air-trapping Stratus™ R insulation, it reduces heat loss through both radiation and convection, offering you a comfortable sleep on frozen bivi ledges and clear nights at altitude. Low on weight, high on comfort, it thrives on long-distance ski tours, winter fastpacking trips, and multi-day ascents.

Rab Ionosphere 5.5 Sleep Mat Features:

• The TILT reflective film inside the mat reduces radiant heat loss, boosting warmth for weight.
• Stratus™ R insulation traps air to prevent heat escaping through convection.
• Soft-touch, lightweight 20D fabric on the upper mat, with a 30D base for added durability on rough ground.
• Oversized outer chambers to keep you central on the mat.
• The versatile rectangular shape is comfortable whatever your preferred sleeping position.
• Inflation and deflation are quick and easy thanks to the low-profile two-way valve and pump sack.
• R-value: 5.5.
• Thickness: 8cm.
• Roll-away stuff sack with repair kit included.
• Dimensions - Regular 183x51cm. Large 196x64cm.
• Packed size - Regular 24x12cm. Large 30x14cm.

Rab Ionosphere 5.5 Sleep Mat Specifications:

• Weight - 615g/21.7oz (Reg)
• Insulation - Stratus™ R insulation traps air and reduces heat loss from convective currents
• Dimensions - Regular: 183cm x 51cm x 8cm. Long wide: 196cm x 64cm x 8cm.
• R-value - 5.5
• Packed size - Regular: 24cm x 12cm (9.4in x 4.7in). Long wide: 29cm x 14cm (11.4in x 5.5in)