I have worn a 7.5 B in the Arahi 4 but the 7.5 B is too small in the version 6. It is both more narrow and shorter. The size 8 B fit. It is a snug fit. The snug fit is designed to keep the feet stable. My foot is wider (not wide) in the toes and narrower in the heel. So, I can wear the 8 B with thin socks. It has good arch support and the insoles are somewhat cushiony. The soles are pretty rigid to help stabilize the feet. Comes in pretty colors.