I used it only once, but I'm selling it because I don't have a need for it. I mainly used it with a mini air pump. I have included photos of the color, size, and how it inflates, so please take a look. I inflated it once for the listing, and it seemed like there were no leaks (I didn't check for a long time). It looks to be in good condition. This is a camping mat that will significantly improve the quality of your sleep during camping, outdoor activities, and car camping. The 7cm-8cm thick urethane foam with excellent elasticity eliminates unevenness in the car and on the ground, reducing the burden on your body. Also, it prevents you from feeling the ground and shuts out cold and warm air from the ground, ensuring a comfortable sleep. The fabric uses easy-to-care-for polyester material, and you can easily wipe off dirt with a wet towel. It's the perfect size to fit a minivan's full flat space. You can connect multiple mats, and when you put two side by side, you can use the interior of the car as a spacious sleeping space, making it ideal for car camping. It can also be used as a camping mat and in case of disasters, so it's safe to keep it in your car as a disaster prevention mat. Note: Because the product is compressed by a machine during shipment, the air may not circulate throughout the urethane the first time you use it, and it may not inflate automatically or to 7cm-8cm. When about half of the air has entered, fold it in thirds and step on it to remove the air, which will allow the air to spread throughout the urethane. Also, it will inflate more easily if you leave it inflated for about a day before using it.