Bought two of these, one for my son, one for myself, he's a size 11, I'm an 8 and 1/2 in regular sneakers. If you prefer a snug fit I suggest if you are eight and a half buy an 8. but the quality is excellent the shower is excellent not sure if it does anything with water have not tried it yet , it is recommended to buy it first, it seems strange to wear it when walking with it, it feels great
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