First of all I bought these shoes to wear while lifting weights, so I have no idea how well they perform on the mat, but they look and feel great. They put your feet flat on the floor as if you were barefoot while giving ankle support; similar feel to Converse, except they contour to your feet and are more lightweight. However the soles will put you at a slight deficit, so keep that in mind if you plan on deadlifting.Personally I wear a 10.5 in most shoes, including Vans, Reebok and Nike. Occasionally I have to size down, like with Doc Martens (size 9-10) and Converse (9.5). I was skeptical of purchasing these online after reading negative reviews about the fit, so I went half a size up to be safe. After trying them on, I think they're overblown. I'm happy with the 11s, but I honestly think I could've broke in my usual size, since they're pretty malleable. Unless you have wider feet I wouldn't worry about the fit.