Size	Length (A)	Width (B)
S	28 in (71 cm)	18 in (45.7 cm)
M	29 in (73.7 cm)	20 in (50.8 cm)
L	30 in (76.2 cm)	22 in (56 cm)
XL	31 in (78.7 cm)	24 in (61 cm)