I have huge feet...11 wide. I bought the Caymen's in size 11, and the Beach in size 10-11. The Caymen fit me better. The Beach are a tiny bit smaller. Although, they are advertised as being wider, I don't find that to be true. I bet if I were a size 10 wide, it may be true...as the Beaches are 10-11. I guess it depends if you are at the top or bottom half of the sizes. By the way...now that I have Crocs, I never want to wear anything else, and I am grumpy when I have to. I just got an invitation to my neice's wedding. It says it is an outdoor wedding, and dress is casual. I asked her if it was "Croc's casual", and she said yes....shoes are optional! I think this will be the best wedding I ever attended!