I don't know who invented it, but it's awesome! When the box shows all the ways to swim on it, I thought so, but it doesn't look comfortable. I was wrong. Any way they offer you to sit and lie comfortably on them! They also fold up to hang by the poolside when you're done storing. That way you don't have to go out or come back to pick them up. They are very durable! I've had mine for a while and they're holding up great! I'm ordering 2 more just to clean up. They are that good and the price is fantastic!
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