This ultralight and packable sleep mat is designed to reduce heat loss through radiation and convection, giving it an unbeatable warmth-to-weight ratio perfect for lightweight adventures in challenging environments.

For mountain expeditions where every gram matters, the Ionosphere 5 is ultralight and packable, yet loaded with the necessary tech to keep you warm in tough conditions. The TILT reflective film within the insulation reduces radiant heat loss, while the Stratus™ R insulation traps air to lessen heat loss through convection, ensuring you can recharge for tomorrow even when the temperature plunges.

• Stratus™ R insulation traps air and reduces heat loss from convective currents.

• TILT reflective film within the insulation helps reduce radiant heat loss.

• R-Value: 4.8.

• Thickness: 8cm.

• Lightweight construction uses air and insulation for superb warmth-to-weight ratio and minimal pack-size.

• Oversized outer chambers help keep you centralised on the mat.

• Graduated grip print finish on upper fabric reduces sleeping bag slip..

• 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.

• Dimensions: Regular 183x51cm. Large 196x64cm.

• Packed Size: Regular 23x11cm. Large 28x12cm.

Fabric Main:20D Recycled Polyester outer fabric with internal TPU Coating and fluorocarbon free DWR.

Insulation: Stratus™ R 100% recycled polyester insulation 160gsm with TILT.

Insulation Type: Stratus™ R 100% recycled polyester insulation 160gsm with TILT.