Please Refer to The Size Guide Above to
Determine Your Correct Size. To Choose Your Correct Helmet Size, Please Measure the Circumference of Your Head 1" Above Your Eyebrows Around
Your Head and Refer to The GDM Helmets Size Guide. Please Note That the Size Guide Is for Reference Only and Cannot Guarantee Perfect Fit.
S: 21 5/8 – 22 IN | M: 22 ½ -- 22 7/8 IN | L: 23 1/4 -- 23 5/8 IN | XL: 24 -- 24 3/8 IN | 2XL: 24 3/4 -- 25 ¼ IN