... visor 5)OEM service min order:300 pieces. Bicycle Helmet,bike helmet,cycle helmet,sports helmet for children,kidsTest & certification: CPSC & CE EN1078Vents: 7Comfortable ... pieces can do customers' own designHelmet safety Tips: Wear the helmet flat atop your head, not tilted back at an angle ... ! Make sure the helmet fits snugly and doesn't obstruct your field of vision ...