800FP Down Insulation • R-Value ~7.3 • Ultralight 4-Season Performance

Push your limits in extreme conditions with the Rab Hypersphere Ultra 7.5 Down Sleep Mat, a cutting-edge insulated air pad engineered for cold-weather expeditions, alpine climbing, and fast-and-light winter travel. Combining premium down insulation with ultralight materials, this mat delivers outstanding warmth without sacrificing packability.

❄️ Extreme Warmth for Cold Environments

Built for serious cold-weather performance, the Hypersphere 7.5 offers one of the highest warmth-to-weight ratios in its class.

• R-value: ~7.3 for true 4-season insulation
• Designed for winter camping, alpine climbs, and arctic conditions
• Proven warmth even in sub-freezing environments

This level of insulation makes it ideal for sleeping directly on snow or frozen ground.

🪶 Premium Down Insulation Technology

Unlike synthetic mats, this pad uses 800 fill-power European goose down to trap heat efficiently and reduce convection heat loss.

• Lightweight down delivers superior warmth-to-weight
• Hydrophobic treatment helps resist moisture
• Quiet, non-crinkly sleep compared to reflective film mats

🛏️ Comfortable & Stable Sleep System

Despite its ultralight design, the Hypersphere offers excellent comfort:

• ~8 cm thickness cushions uneven terrain
• Oversized outer chambers help keep you centered
• Hybrid rectangular shape allows multiple sleep positions

The result is a stable, supportive sleep — even on rocky or frozen ground.

🎒 Ultralight & Packable for Expeditions

Weighing approximately ~610 g (21.5 oz), this mat is built for performance without unnecessary bulk.

• Packs down to approx. 24 × 14 cm (regular size)
• Ideal for mountaineering, ski touring, and fastpacking
• Compact enough for expedition packs

🔧 Efficient Setup & Smart Design

• Two-way low-profile valve for quick inflation/deflation
• Pump sack included for fast, moisture-free inflation
• Down requires short settling time to reach full loft

🌧️ Durable, Lightweight Materials

Constructed with 20D recycled polyester and TPU coating, the Hypersphere balances durability with ultralight performance.

• Tough enough for alpine environments
• Lightweight construction for fast travel
• Eco-conscious materials

🌄 Perfect For

The Rab Hypersphere Ultra 7.5 is ideal for:

✔ Winter camping & 4-season adventures
✔ Mountaineering & alpine expeditions
✔ Ski touring & cold-weather trekking
✔ Fastpacking in extreme environments
✔ Adventurers needing maximum warmth with minimal weight

⚡ Why You’ll Love It

✔ Exceptional warmth-to-weight ratio
✔ Premium down insulation for superior comfort
✔ Quiet and stable sleep experience
✔ Ultralight yet expedition-ready
✔ One of the warmest lightweight pads available

🔥 Sleep warm in the harshest conditions with the Rab Hypersphere Ultra 7.5 — a premium down-insulated sleeping mat built for extreme cold, serious adventures, and uncompromising performance.