inflatable kayak, boat toy, water raft, inflatable reusable bathtub liner This product has a 5 inch inflatable rim which is inflated just like a beach ball. Takes less than 1 min to blow up with your mouth No pump necessary. This allows for more water to be added to your current bathtub. Once finished bathing drain the tub by opening the drain and thoroughly drying The entire product acts as a sanitary lining for your current bathtub so you are able to enjoy your soaking experience no matter what kind of mildew or crud is on the floor of your tub. The inflatable rim acts as a cushion for your entire body to make your bath experience more enjoyable than ever before. This product can help with the safety of bathing your children as well cause the inflatable rim acts as a safety net.