Well, this depends on a lot of factors and most importantly how caring you are! As far as these kayaks are concerned, it depends on the build quality and material as well. PVC and Hypalon kayaks are sturdy and durable to last for a long time. These kayaks can deal with some harshness as well. But you should protect them from excessive sunshine. Also, you should wait for your kayak to dry after deflation and then pack it. Otherwise, it is likely to get damaged. If you can follow these steps properly, your inflatable kayak is supposed to last at least a decade and more.