9FIFTY Size Chart

Circumference Cap Size
(cm) (in)
54.9 21 5/8 Small - Medium One Size Fits Most
55.8 22
56.8 22 3/8
57.7 22 3/4 Medium - Large
58.7 23 1/8
59.6 23 1/2
60.6 23 7/8
61.5 24 1/4