A headsock is a protective garment that you put on your head before you put the helmet on to provide a sanitary barrier between your head and the helmet. All racers that are using our helmets are required to have a headsock. Headsocks can be purchased at the front counter for $3 and they are yours to keep. Just make sure you hang on to it so that you don’t have to purchase one again the next time you come in!