I bought these cleats for my three year old little girl and they are cute as heck! They run exactlty one full size smaller than regular street shoes (I actually measured them with a ruler and compared them to some of my daughter's other shoes). They are also on the narrow side. My daughter normally wears a size 8, and the size 9 cleat (which I ordered) fits just right, but I wonder if a 9 1/2 would have been better for some future growth. I guess I will find out later on in the season. One month later update: we cannot fit these cleats over the extremely thick team socks we were given with her uniform so in hindsight I would have purchaced these a size and a half bigger than her regular street shoe size.