I bought these shoes to wear on dive vacations. I needed a shoe I could wear getting to and from dive locations, including dive boats, so it had to be a shoe that could get completely wet and dry quickly, protect my feet on a variety of surfaces, and slip-on rather than lace up for fast/easy dressing & removal - and these fit the bill. Overall, I am pleased with the comfort of the shoe. I like the small nubs on the inside sole and the material is very pliable and soft. The "button" on the bungee laces of one shoe is a bit tight, so when I wanted to tighten the laces, I had to use a coin on that button to move it. I wear a 9.5 shoe, and a 10 with my gym shoes to account for thicker socks
and wiggle-room; so I ordered the 41 (listed as American 9.5) - these shoes were much too large and I had to return for a 40. I also have very flat feet, virtually no arch at all, and these fit width-wise, leading me to believe that those with narrower feet or actual arches may find them a bit wide, but may still work if you plan on wearing socks
or tightening them more. Overall, I am pleased with this purchase; they are kind of funny looking, but I wasn't going for fashion, only function.