Ultralight Insulated Sleeping Pad • R-Value ~4.9–5.5 • Compact & 4-Season Ready

Push further into the backcountry with the Rab Ultrasphere 5 Sleeping Mat, an ultralight insulated air pad designed for fast-and-light backpacking, mountaineering, and multi-day adventures. Delivering an outstanding warmth-to-weight ratio, this mat keeps you comfortable in cold conditions while packing down incredibly small.

🏕️ Extreme Warmth Without the Weight

Engineered for performance, the Ultrasphere 5 combines advanced insulation and lightweight construction to keep you warm in demanding environments.

• R-value: ~4.9–5.5 for cold-weather and 4-season use
• Dual layers of TILT (Thermo Ionic Lining Technology) reflect body heat back toward you
• Designed for alpine, winter, and shoulder-season conditions

This makes it one of the best options for ultralight adventurers needing reliable warmth.

🎒 Ultralight & Ultra-Packable Design

Weighing as little as ~345g, the Ultrasphere 5 is built for minimal pack weight without sacrificing performance.

• Packs down smaller than many water bottles
• Ideal for thru-hiking, bikepacking, and fastpacking
• Perfect for weight-conscious adventurers

🛏️ Comfortable & Supportive Sleep

Despite its ultralight design, the mat delivers excellent comfort:

• ~8 cm thickness cushions uneven ground
• Offset air chamber construction reduces heat loss and improves stability
• Tapered mummy shape reduces weight while maintaining support

The result is a stable, comfortable sleep system in any terrain.

🌧️ Advanced Materials & Durable Build

Constructed with lightweight yet durable fabrics, the Ultrasphere 5 is built for demanding use:

• 20D recycled fabric for reduced weight and pack size
• PFAS-free materials for environmentally conscious performance
• Durable construction suitable for alpine and backcountry conditions

🔧 Fast Setup & Easy Use

• Two-way valve system for quick inflation and deflation
• Includes pump sack for efficient inflation
• Repair kit and stuff sack included

🌄 Perfect For

The Rab Ultrasphere 5 Sleeping Mat is ideal for:

✔ Ultralight backpacking & thru-hiking
✔ Mountaineering & alpine expeditions
✔ Bikepacking & fastpacking
✔ Cold-weather and 4-season camping
✔ Adventurers needing maximum warmth with minimal weight

⚡ Why You’ll Love It

✔ Exceptional warmth-to-weight ratio
✔ Ultralight and highly packable
✔ Comfortable 8 cm cushioning
✔ Advanced heat-reflective insulation
✔ Built for serious backcountry performance

🔥 Go lighter, sleep warmer with the Rab Ultrasphere 5 — a cutting-edge ultralight sleeping mat designed for high-performance adventures in any season.