American / Nearest 1/8 inch / Metric cm / Size Code
6 5/8 20 3/4 53 X-Small / Child M
6 3/4 21 1/8 54 Small
6 7/8 21 1/2 55 Small / Child L
7 21 7/8 56 Medium
7 1/8 22 1/4 57 Medium
7 1/4 22 5/8 58 Large
7 3/8 23 59 Large
7 1/2 23 1/2 60 X-Large
7 5/8 23 7/8 61 X-Large
7 3/4 24 1/4 62 XX-Large
7 7/8 24 5/8 63 XX-Large
8 25 64 3XL
Broadway Quality Made in USA by HXC Hatcrafters Inc.