LOVE these water shoes. They run a little big, so if you're between sizes, choose the smaller size. I wear 10.5s in regular shoes and they were only available in 10s or 11s. SO GLAD I took a chance and got a size 10! Remember that most of the time the shoes slip when they are a bit loose in the water. My size 10 fits me perfectly, holds up well and feels incredibly comfortable. The showers are very sticky = great grip on almost all surfaces and the inside of the showers is really soft/comfortable.