What Our Gearhead(R) Experts Are Saying:"I used the Dura 6. 5R Duo on a snow camping trip and was shocked at how warm it kept us. It's roomy, stable, and doesn't shift around like some double pads. The SynMat Plus insulation works well, and inflation is quick with the Schnozzel pump. It's built for serious cold."Built for alpine camps, snowy bivvies, and frostbitten backcountry nights, the Dura 6. 5R Duo Sleeping Pad offers cold-weather protection in a double-wide design. With an R-value of 6. 4 and a 3-inch thickness, it's warm and stable for two-person use in sub-zero temperatures-ideal for shoulder-season treks or full-on winter expeditions. This mat uses SynMat Plus Technology(TM) and recycled Texpedloft microfiber insulation to block ground chill while maintaining excellent compressibility. The durable recycled polyester fabric is TPU laminated and bluesign(R) approved, offering rugged performance with a sustainable build. It inflates fast with the included Schnozzel Pumpbag, so we can save our breath for the adventure ahead.