Suomy Helmets Size Guide

Suomy Helmet Size Chart

This Suomy Helmet Size Conversion Chart will help you to determine what Suomy helmet size will provide you with the best fit.

Suomy Helmets

INCHES
SIZE
METRIC(cm)
20 1/2 – 20 7/8
X-Small
53-54
21 1/4 – 21 5/8
Small
55-56
22 – 22 1/2
Medium
57-58
22 7/8 – 23 1/4
Large
59-60
23 5/8 – 24
X-Large
61-62
24 1/2 – 24 7/8
XX-Large
63-64
25 1/4 – 25 5/8
XXX-Large
65-66