I have used the Coleman King mattress almost every night in nine months. It replaced a water mattress. During the cooler months it did leak down about every 4 days for some unknown reason. Apparently, it's like an auto tire. However, now it leaks down over night which is unacceptable. One would think it would be servicable for more than nine months. Would I buy another? Yes, for the price and the comfort it's provided I can replace. However, I will be hitting up Coloeman for some guidance in RE: to either repair or replacement and a better inflation method. Maybe a little Zap-A Gap super glue is in my future!