I inflated it as soon as it arrived and left it up for a week....it held the air with no problem.  Easy to inflate and deflate and I like the up/down control to adjust the bed during use....my last bed would lose air and the only way to add it was to get out of bed and access the control panel on the end of the bed...so this feature is a real plus for me.  I am only giving 4 stars because I haven't slept in it yet to give it a true test.