I usually wear size 38 EU, but I took size 39, just because I didn’t want them to sit tight on my fingers and ball of the foot. They are very comfortable, I was pleasantly surprised. They came with a little bit of smell, but leaving it out of the bag it goes away. Highly recommend. Because of the bigger size, the straps on the side sit a bit loose, but I will poke 2 more holes and it will be perfect. Sizing down would make the shoe too tight and uncomfortable.