The OneK riding helmet features cutting-edge design and maximum safety and comfort! OneK helmets feature an injection-molded outer shell of advanced polycarbonate and ABS combined with an EPS liner - the EPS liner is the main part of impact absorption in a helmet. OneK uses only high-quality EPS with a density that makes the helmet perfect for impact absorption. VG01 approved. ComfortThe OneK helmet offers a very high level of ventilation, with two front, two side, one back and two central vents. The helmet features a padded harness with synthetic suede lining, hook-and-loop adjustment and a fast-tex buckle. OneK helmets are available in 3 shell sizes. By using the OneK liner, available from XS to XL, you can achieve a perfect fit. The OneK liner is made from a washable, dry rapide fabric; it wicks away moisture and is antimicrobial. DesignOne K™ helmets benefit from a perfect synergy between advanced technology and aesthetic design. With enough features to appeal to those looking for everything a helmet can offer, wrapped in a package that traditionalists can appreciate, One K™ has the best of both worlds. Glossy, matte, suede, shiny and sparkling with genuine Swarovski crystals, the possibilities are endless.