SixSixOne Helmet Size Chart
Adult Helmets
Helmet Size
X-Small
Small
Medium
Large
X-Large
2X-Large
Centimeters
53-54
55-56
57-58
59-60
61-62
63-64
Inches
20 7/8" - 21 3/8"
21 1/8" - 22"
22 1/2" - 22 7/8"
23 1/4" - 23 5/8"
24" - 24" 1/2
24 7/8" - 25 1/4"
Head Size: With tape level, measure the widest point of your head, approximately 1 inch above your eyebrows
Sizing information is provided by the manufacturer and does not guarantee a perfect fit. Please use this chart as a guide only.