SIZE 13 FITS A 7 1/8 INCH LONG FOOT PERFECTLY.  BEST OF ALL, SHE HAS A DIFFICULT TIME UNZIPPING THEM, WHICH MEANS SHE KEEPS THEM ON.  SHE IS 6 1/2 YEARS OLD ,49 LBS, AND 46 INCHES TALL. I BOUGHT THE RED FABRIC WITH DESIGNS.  EASY TO PUT ON AND COMFORTABLE. THERE IS A 1/2 IN SPACE AT TOE FOR GOOD FIT.