CK-6 White Full Face Racing Helmet for Junior (CK6-CMR2016-W-XS) by Arai Helmets® Color: White. Size: XS. Designed specifically for junior kart racers who are too small to comfortably fit and/or support the weight of an adult model SK-6 karting helmet. Meets SNELL/FIA CMR standard for junior karting This product is made of high-quality materials. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an affordable cost.