Hope you enjoy shopping and have a great day!Thank you for choosing LXBH !If you have any questions about the product, please feel free to contact us.We will answer and solve your problem within 24 hours.Motorcycle helmets are waiting for fearless rider adventures. what are you waiting for?Flip helmet features:★ABS helmet body, EPS high-density buffer layer★Removable ear lining, soft and comfortable inner lining, cool and breathable★Multiple vents to ensure head comfort★Double lens design, the inner lens effectively protects the eyesName: Electric Motorcycle Flip Helmet Double Lens Full HelmetHead circumference size:S: 55-56cm/21.7-22 inM: 57-58cm/22.4-22.8 inL: 59-60cm/23.2-23.6 inXL: 61-62cm/24-24.4 inShell material: ABSApplicable season: all seasonsApplicable gender: unisexCertification: DOT/ECE safety certificationPackage includes:1*Motorcycle full helmetnote:1.The size of this product is manually measured, there will be some errors, please refer to the actual product2.Due to different computer monitors, light and different shooting angles, there may be slight chromatic aberration