TSG Evolution Bones Rat Multi-Sport Helmet Developed by our pro skate team, the Evolution gives you the protection top riders demand Newly designed heat sucking ventilation system pushes the air from the front of the helmet to the back to pull the heat away from your head Added pre-molded paddingfor easy adjustment and insane comfort Anatomically shaped chin buckle offers you additional safety whatever move you do TSG are warrantied against any manufacturers defect We reshaped the the side panels in order to provide increased protection for your temples and around your ears