The new 11K helmet Combo is designed with overall safety as a top priority. Designed to absorb the high impact hits, as well as adjust 360 degrees to your uniquely shaped head, it"s Reebok"s lightest helmet without sacrificing fit or impact absorption. * Next generation aerodynamic shell with ventilation designed for a low-profile fit * EPP Flexible liner with comfort cushions contours to the unique shape of your head * The Microdial II permits 360 degree wrap and vertical adjustment to alleviate pressure points and hold helmet firmly in place * Features fit clips that permit easy tool-less length adjustment * Using carbon fiber technology in the subshell allows for a lightweight helmet without sacrificing protection