CE approved ,A sleek, Aerodynamic design, much air vents for maximum cooling.(bicycle helmet,sport bike helmet,bike helmet) bicycle helmet,sport bike helmet,bike helmet1)Vent:16 vents 2)A sleek, Aerodynamic design, much air vents for maximum cooling 3)Adjustable chin straps for added comfort 4)A quick-release strap buckle. 5)It offers protection whilst being comfortable to wear. 6)A variety of ...