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GPA Helmets Size Chart

GPA Helmet Size Chart

HEAD SIZE (CM) HELMET SIZE
53 6 1/2
54 6 5/8
55 6 3/4
56 6 7/8
57 7
58 7 1/8
59 7 1/4
60 7 3/8
61 7 1/2
62 7 5/8