Oshide Bike Scooter Motorcycle Half Helmet With Goggles Glasses Visor For Women Men (Red+Black) Helmet material: ABS Product color:red+black Product size: about 285 x 225 x 150 mm/11.2" x 9" x 6" Suitable head circumference: 55 - 60 cm/21.5" - 23.6" Adjustable nylon chin strap