I purchased this product and it worked very good the first two times. Afterwards, I blew it up and 2 huge knots came in the middle. I was careful not to over fill it with air. With this being within a reasonable time from the purchase date, I called Intex and explained the situation. They barely spoke English and would not allow me to speak to a supervisor. They stated that all supervision was located in China and not available to speak to customers. They simply refused to negotiate any kind of customer satisfaction. In its current condition, the bed is not usable.