Features:-With innovative wave-shaped design, the height is 10cm when fully inflated, providing sufficient support for your back. -You can inflate it by stepping on the pump interface with one foot, and it only takes 1 second to empty it quickly, saving energy. With the improved version of the non-leakage membrane exhaust valve, you no longer have to worry about leakage.-Made of thick 40D nylon with TPU coating, it is abrasion, tear and moisture resistant for a long service life.-The size is 200*133cm, suitable for 2 people. Whether you are lying flat or on your side, you will not feel any bumps, providing you with a comfortable sleeping environment.-Equipped with a storage bag, it can be easily put into your backpack for easy carrying, very suitable fo.