The Sparco Guard RW-3 socks are constructed from natural soft knit Nomex, a flame resistant material that has been a favorite for many years. The close weave allows for very light weight and high comfort levels. FIA 8856-2000 approved.
TO ENSURE AN ACCURATE FIT, use this chart to order your correct helmet size. Carefully measure around your head, above the ears. Take the measurement, in inches or centimeters, referring to the sizing chart below for your correct hat/helmet size. Helmet must fit properly for optimum performance. Don't guess your size. Helmet must be securely and snugly fastened before engaging in any activity.