They melted in the sun!<br /><br />My daughter hates the feel of sand on her feet so she always wears rain boots to the beach. She has gone through several different brands through the years and this is the only one that we've ever had a problem with. We left them on the back porch and when we came back the next day we found that they had melted and were a completely distorted shape. Interestingly, they were left right next to her regular crocs and those were fine and weren't damaged at all.