Helmet Fit Chart

To measure your correct helmet size, measure the circumference of the head, like a headband, one inch above the eyebrows, above the ears.  Match inch measurement to chart.  If between sizes, choose the next larger size. Helmet should fit snugly but not overly tight.

Inch Around cm Hat Size Shoei / HJC / Aeon 19-3/4" - 20-1/8" 50-52 6-1/4 - 6-1/2 Childs S/M 21-1/4" 53-54 6-5/8 - 6-3/4 Childs L/XL 21-1/8" 51-52 6-3/8 - 6-1/2 XX-Small 21-1/4" 53-54 6-5/8 - 6-3/4 X-Small 21-5/8" 55-56 6-7/8 - 7 Small 22-3/8" 57-58 7-1/8 - 7-1/4 Medium 23-1/8" 59-60 7-3/8 - 7-1/2 Large 23-1/2" 61-62 7-5/8 - 7-3/4 X-Large 24-1/4" 63-64 7-7/8 - 8 XX-Large 24-5/8" 65-66 8-3/8 - 8-1/2 XXX-Large