S M L XL 2XL
Length (inches) 26 26 ½ 27 ⅛ 27 ¾ 28 ⅜
Width (inches) 15 ¾ 16 ½ 17 ½ 18 ½ 19 ½

 

 
S M L XL 2XL
Length (cm) 66 67 69 70 71
Width (cm) 40 42 44 47 50