CAP SIZE CM INCHES FITTED
6 7/8 54.9 21 5/8 6 7/8
7 55.8 22 7
7 1/8 56.8 22 3/8 7 1/8
7 1/4 57.7 22 3/4 7 1/4
7 3/8 58.7 23 1/8 7 3/8
7 1/2 59.6 23 1/2 7 1/2
7 5/8 60.6 23 7/8 7 5/8
7 3/4 61.5 24 1/4 7 3/4
7 7/8 62.5 24 5/8 7 7/8
8 63.5 25 8
8 1/8 64.5 25 3/8 8 1/8
8 1/4 65.4 25 3/4 8 1/4