Croc shoes do not like the sun

Hi there<br> I have just had major foot operation to both my feet and the only shoes I could walk in was crocs. I have been wearing them now for about five months and are very comfortable. One morning I left them in the sun by mistake. By that afternoon they had curled up at the toe and heal of the shoe. I tried to straiten them and put them back onto my feet but they had shrunk by a size both in length and width so that I cannot get them on anymore. Is there anyway to get them back to their original size. Please help. P.S. There is not label telling what the sun can do to crocs.