14+ Helmet Size Conversion Chart Pictures. By using the one k foam liners you can achieve the perfect fit. The one k helmets are available in 3 shell sizes.
Find the right one using the agv size guide.
Take the measurement, in inches or centimeters, referring to the sizing chart below for your correct hat/helmet size. As body types vary from person to person and the. A helmet size chart with us hat size matched up with head circumference. You will have to try the helmet on to determine if it fits the shape of your head.