Size Selection and Use: You can measure the size of our products to see if it is suitable for your car or tent, etc. Before you buy, we hope you can choose the most suitable size for you, you can watch our video and instruction manual when you can't understand how the air cushion inflates automatically, which will help you use the product more quickly! The inflatable pump will also make it easier for you to use the product! New Extra Thick Foam Camping Mattress: Measuring 75"x 25"x 4" (Small single size), most camping mattress on the market are about 3 thick, this extra thick mattress is made with 4" of foam to keep you off the ground. The highly resilient, high-tech foam distributes weight evenly across the different contact points of the sleeping pad, creating an incredibly soft and supportive surface. Ideal for side sleepers, it can hold up to 800 pounds to ensure maximum comfort for a good night's sleep. Adjustable Support with Self Inflating Sleeping Pad: This pad features a unique combination of foam and air, making it fully adjustable for personalized softness and support. This means you can easily adjust the comfort of the mattress according to your preferences, providing you with the best sleeping experience.