* 4" THICK FOR MAXIMUM COMFORT in this premium self inflating sleeping pad. You get a very comfy extra thick 4 inch of air padding that protects from rough ground, hard floors, and cold conditions. Providing a true 4-season pad with an estimated R-value of 4. Get a great night's sleep anywhere at any time. Measures 74" x 24" x 4" fully inflated. * FAST INFLATABLE DESIGN with Built-in Air Pump. Simply stomp or hand press to inflate. Much easier than blowing it up with your breath or another pump, no batteries needed. And the outtake valve has the double-decked design, one is for inflating or slow release of air for adjusting the firm you like, and the 2nd is for quick deflation. So if you haven't got the skill of built-in pump yet, don't worry, you also can blow it up by mouth or electric pump though that valve. * RUGGED LONG-LASTING 75D Polyester pongee fabric with extruded PVC lamination. This is the most durable fabric around used for military parachutes. It's waterproof and warm which will protect you from the wet ground in the most extreme conditions. This sleeping mat will be a perfect match for your tent, sleeping bag, and camping cot. * ALTERNATIVE USE This camping mat folds up to a compact 6" x 6" x 14" just right to fit into a backpack or suitcase. Essential for backpacking, camping, car traveling, hunting, beach, etc. Even can be used as a floating mattress for great fun in summer! The Snaps also allow you to connect pads together to create the double camping pads, which provides more room to stretch out.