Reebok 11K Hockey Helmet Specs :New Reebok Shell - Next generations aerodynamic shell with ventilation designed for a low-profile fitEPP Floating Liner - EPP flexible liner with comfort cushions contours to the unique shape of your headMicrodial II - Permits 360 degree wrap and vertical adjustments to alleviate pressure points and hold helmet firmly in placeFit Clips - Permits easy tool-less length adjustmentSubshells - Using carbon fiber technology that revolutionized the stick market, Reebok designed a lightweight helmet without sacrificing protection