★Friendly reminder: It is very dangerous to ride a motorcycle without a motorcycle helmet. It also violates the traffic rules. In order to better meet your purchase needs, please measure the return of your actual head circumference before buying. It will cost you lost your precious time .Type: Retro half helmetMaterial:Carbon fiber, EPSBuckle: convenient and quick releaseCertification: DOT safety certificationApplicable season: four seasonsSize: 55-59cmHelmet: high-quality ABS material, wear-resistant, impact-resistant, not fragile, protect the head to reduce damagePackage includes1*helmetcustomer service:★If you have any questions or dissatisfaction with the product, please contact us and allow us to solve this problem perfectly through friendly communication.★If you are satisfied with my product, I hope you can rate us. This is important not only to me, but also to other friends who need this product.