*Type: Buckle, both side buckle ,single slide buckle*Material: Plastic*Application: sport helmet,motorcycle helmet,bicycle helmet*Shell material: plastic*Buckle: quickly relea
*Type: Buckle, both side buckle ,single slide buckle
*Material: Plastic
*Application: sport helmet,motorcycle helmet,bicycle helmet
*Shell material: plastic
*Buckle: quickly release plastic buckle
*Lining: High density EPS
*Usage: Helmet accessory