I ordered half a size up after reading the reviews and it was still too small. No problem returning and getting a full size up. This shoe has a thin training shoe inside, kind of a strange design for me, I have never worn the inner shoe by itself.<br />At first these did rub on the back of my ankle. The back of the shoe is too high for me. I guess that with enough wear I got used to it and it doesn't rub anymore. Still not what I would have expected from an ASICS design.<br />I feel they provide great support and the colors are gorgeous, which is not the most important thing in a running shoe, but it doesn't hurt to go out there in style ;)