I ordered a size bigger than I would normally wear just in case they were too tight on my ankle that I have tons of problems with including swelling. Even though they were a full size bigger (size 11 and normally wear around a 10) they did not feel huge and slip off when walking or in the water even with a whole thumbs width between my big toe and the front of the shoe. They were perfect for what I needed them for, which was a day of floating in water while camping. I also used these shoes to shower in. Like I said earlier, I have a really bad foot and leg, these did not bother it at all when on. I was glad I ordered a size bigger for that reason, but could not tell walking or in the water they were a full size larger. They were comfortable to walk in. Felt like I had regular shoes on and not water shoes. They weren't as ugly as some water shoes can be. The only thing that annoyed me and only because Im picky was the tongue kept sliding to the outside instead of staying in the middle. It could be bacuae of the larger size. Even though I am mentioning it, it did not effect the function of the shoe at all. I would recommend these water shoes to everyone. They had a nice sole that was just thick enough to not feel what you were walking on (rocks, uneven ground) but thin and light enough to maneuver around in the water. I wish the purple, fuchsia and mint came in the size I needed. 