I normally wear a 8 1/2 and these fit great. A bit of space in the front and back, but it's fine and doesn't look strange. Very cushy and comfortable. I was originally looking at the Reef Dream flip flop but was worried about my foot sliding in them (some reviewers noted this problem) so I switched to these ones.  My foot stays firmly in the flip flop when I walk in them. There is good arch support on these flip flops..so much I think my feet were a bit achy the first few days I wore them, but I've broken them in and my feet feel fine now.