An inflatable can last anywhere from a few days to several weeks, depending on how well it is cared for. Inflatables are made of durable material that can withstand being inflated and deflated multiple times, but over time the material will start to degrade and become less elastic. If you want your inflatable to last as long as possible, be sure to store it in a cool, dry place when not in use and avoid puncturing it with sharp objects. With proper care, an inflatable can provide years of enjoyment.