Rab Ionosphere 5.5 Sleep Pad

Designed to endure extreme temperatures and unforgiving environments, the Ionosphere 5.5 comes fully outfitted with technology to shield users from the cold. Its construction minimises heat loss through both radiation and convection, courtesy of heat-reflective TILT technology and air-trapping Stratus™ R insulation. Offering an exceptional warmth-to-weight ratio alongside a compact pack size, it stands as the ultimate high-comfort sleep mat for alpinists and mountaineers seeking shelter in the world’s harshest terrains.

Thoughtfully engineered details have been incorporated to enhance comfort, including oversized outer chambers that keep users securely positioned at the centre of the mat, and a grip print designed to minimise sleeping bag slippage. The fabric delivers a soft, skin-friendly touch, while the versatile rectangular shape ensures a restful sleep no matter the preferred sleeping posture. A low-profile two-way valve and a convenient pump sack make it effortless to inflate the mat swiftly when temperatures plunge and rest beckons.

Constructed from 100% recycled insulation, recycled fabrics, and finished with a fluorocarbon-free DWR, the Ionosphere 5.5 is purpose-built to excel in hostile conditions. From icy bivouacs to early alpine starts, it ensures users can replenish their energy in comfort, wherever the night’s camp may be pitched.

Features

• Stratus™ R insulation traps air effectively and limits heat loss from convective currents.
• TILT reflective film integrated within the insulation works to reduce radiant heat loss.
• R-Value stands at 5.5 for impressive thermal performance.
• The mat features a thickness of 8cm, balancing comfort with insulation.
• Lightweight construction expertly combines air and insulation for an outstanding warmth-to-weight ratio and minimal packed volume.
• Oversized outer chambers assist in keeping sleepers securely centralised on the mat.
• Graduated grip print finish across the upper fabric helps reduce movement and sleeping bag slippage.
• A hybrid rectangular shape accommodates a range of comfortable sleeping positions.
• A low-profile two-way valve ensures easy inflation and deflation processes.
• A pump sack is included for rapid, hygienic inflation without breath moisture.
• A roll-away stuff sack with a repair kit is provided for practical storage and maintenance.
• Dimensions are Regular 183x51cm and Large 196x64cm.
  Packed sizes measure Regular 24x12cm and Large 30x14cm.
  
  

Specifications

Technology

TILT (Thermo Ionic Lining Technology)

This innovative heat-retention technology functions similarly to an emergency blanket by reflecting body heat back towards the wearer while still allowing for breathability and comfort. By enhancing thermal efficiency, it provides essential warmth when temperatures drop significantly.

Stratus™ R

This durable synthetic insulation is crafted entirely from 100% recycled post-consumer materials. Engineered to trap an optimal volume of air, Stratus™ R offers impressive warmth-to-weight performance. It continues to insulate effectively even when damp and is quick to dry, making it a reliable choice for variable conditions.