I'm a supinator with really high arches so shoes with thick "comfortable" soles throw my balance off. It took years of working long shifts on my feet on hard hospital floors for me to discover what a difference barefoot shoes make. I've tried many brands of minimal shoes over the past 2 years, and these are my favorite so far. I also run in the same shoes I wear for work. I usually wear a 7, 7.5, or 8 as my feet are short, but wide. I purchased size 8 in these and they're perfect. The toe box is very roomy while the heel is tight,  no slipping at all. I'm really happy with these!