DURA-MATTER: Our most robust construction method, using an injected molded Dura-Matter shell applied over an EPS foam liner. Dura-Matter is dent and ding resistant, offering the highest level of durability. FIXED VENTILATION: Fixed vents in front of helmet allow for goggle ventilation while the fixed vents on top of the helmet help keep the riders cool FIDLOCK BUCKLE: Seamless magnetic functionality lets you fasten your helmet with gloves on. Visit the Oakley Brand Store to shop the entire Oakley apparel assortment