LENGTH (inches) WIDTH (inches)
4Y 18 ⅛ 14 ¼
6Y 19 ¼ 15 ⅜
8Y 20 ½ 16 ½
10Y 21 ¾ 17 ¾
12Y 22 ⅞ 18 ⅞
  LENGTH (cm) WIDTH (cm)
4Y 46 36
6Y 49 39.1
8Y 52 42
10Y 55.1 45
12Y 58.2 48