The #1 riding helmet is better than ever. The new Spirit design offers deeper coverage for incredible comfort and security. Drivers love its new low-profile design and DialFit technology that work together to create the most comfortable fit for a variety of head shapes. The XS size is ideal for young riders with its dropped back design that increases the stability of the helmet. Hat & Head Size: XSmall: 6" - 6" - 7.5" - 8" Small 6" - 6" / 8" Medium: 7" - 7" / 22" Large 7" - 7"