The RidgeRest Deluxe is Therm-a-Rest's thickest, warmest, and most comfortable closed-cell sleeping pad. Perfect for snow-bound winter camping, the RidgeRest Deluxe insulates you from the ground without having to use body heat to keep air warm underneath your sleeping bag. The classic, unique ridged design is softer and warmer than traditionally-designed flat foam pads. And of course, closed-cell foam pads are next to indestructible, so you'll have this pad for years to come.