bought these for my 4 year old son who's a strong skater, beginner player. he outgrew his size 8 skates so i decided to go with a 10 instead of 9 to allow some growing room (and avoid purchasing new skates in another 6 months). he is tennis shoe size 10/11, the skates are a little big, but work with thick socks. have a vent/air flow on bottom of skate which is nice, son says they are way comfortable. definitely have a narrow foot bed.