Mountain Spring
Mountain Spring UL R9 Insulated Sleeping Mat
Mountain Spring UL R9 Insulated Sleeping Mat
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Built for true deep-winter missions, the R9 Series pairs an exceptional R-value of 9 with ultralight builds that stay quiet, supportive, and compact. A dual-core thermal system—reflective film + upgraded internal insulation—locks in heat over frozen ground, while the 3D profile spreads pressure evenly for stable sleep. A dual-layer valve makes inflation simple and deflation fast.
R9 — 680 g, 30D nylon
The original R-9 mat with a tougher 30D shell for added abrasion resistance and everyday durability—ideal when terrain is rough but you still need deep-winter insulation.
R9 Pro — 520 g, 20D nylon
Our gram-counter choice: the R9 Pro delivers full R-9 protection at just 520 g, using a refined 20D shell for minimal weight. It sets a new bar for warmth-to-weight performance—R-9 in a truly ultralight package.
Choose R9 Pro when every gram matters, or R9 when you want extra shell toughness. Either way, you’re packing four-season warmth ready for alpine pushes, snow camps, and high-latitude routes.
Specifications
Specifications
- Type: inflatable
- Shape: Rectangular
- R-Value: 9.0
- Dimensions: 190 × 66 × 8.9 cm
- Packed Size: φ10 × 28 cm
- Valve Type: dual-layer valve (one-way inflation + rapid deflation)
Materials
Materials
- Top Fabric: 30D/20D nylon
- Core Material: air
- Thermal Film: Yes (aluminum foil reflective layer)
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The matt is lightweight but when inflated is very comfortable, i haven't used it yet outside but I'm looking forward to using it in the great outdoors
The matt rolls up to a small size and is easy to pack away
A super professional inflatable sleeping pad. It comes with an inflation/stuff sack, so it’s super beginner-friendly. The packed size is insanely small — about the size of a bottle of mineral water! Lightweight, with a high R-value — basically the best warmth-to-weight ratio sleeping pad out there. Built-in aluminium foil layer boosts heat reflection. The thickness gives much better support for side sleepers. Looking back at my old pad… yeah, it’s ready for eBay:)
I bought this sleeping mat for a camping trip in Wales last week, and it exceeded my expectations. It’s incredibly compact, making it easy to pack, and only took a few puffs to fully inflate. The material feels thick and durable, clearly built to last—it even handled several friends sitting on it in my tent without any issues.
In terms of comfort, it provides excellent support regardless of my sleeping position. Despite the biting winds in the Welsh valley, I stayed perfectly warm all night. It’s a reliable piece of gear that I can confidently count on for a good night's sleep.