Simpson Helmet Sizing Chart
Determine your helmet size by measuring your head at a point 1'' above your eyebrow & a point in the back of the head that results in the largest possible measurement.
Inches Size Size
20-3/8'' to 21-1/8'' 6-5/8 to 6-3/4 X-Small
21-1/8'' to 22'' 6-7/8 to 7 Small
22'' to 22-3/4'' 7-1/8 to 7-1/4 Medium
22-3/4'' to 23-1/2'' 7-3/8 to 7-1/2 Large
23-1/2'' to 24-3/8'' 7-5/8 to 7-3/4 X-Large
24-3/8'' to 25-1/8'' 7-7/8 to 8 XX-Large


i just checked and i have the large helmet..

 

bump....................

 

bump................