The One K helmet you've come to love with integrated MIPS technology for young riders. MIPS is intended to add protection against rotational impacts to the head that could result from riding accidents at high speeds. A helmet is only safe if it fits correctly. It is always better to be fit by a professional than it is to purchase a helmet on line.   Matte polycarbonate and advanced ABS composite outer shell Injection molded shell design Incorporated MIPS technology Washable, quick-dry, moisture wicking, anti-microbial removable liner Stainless steel mesh Comfort padded harness with synthetic suede lining Two front, one back, and two center stripe vents Safety standards: certified to ASTM standards. One K Junior MIPS Helmet