High Quality: AHR RUN-F Full face motorcycle helmet, meets or exceeds DOT safety standards to ensure quality and safety, perfect for street motorcycles like cruisers. It High Quality streamlined aerodynamic design to reduce wind noise and drag Lightweight & Comfortable - Upgraded lightweight ABS shell with a thick, high density fully vented EPS liner; ventilation opening system for air intake and exhaust, which brings you a better protection and comfortable wearing during riding Built-in Double Visors - Wide visual field clear visor & inner sun visor: tough & high elastic front visor for great impact resistance; internal dark visor for additional eye protection from the sunlight and can be easily controlled with a switch Quick Release Buckle - for easily getting on and off and holding the helmet securely on your head Removable & Washable Liner & Cheek Pad - for easy cleaning Product Details: Overall Dimension (LxWxH): 10 13/16" x 14 3/16" x 10 1/4" (27.5 x 36 x 26 cm) Material: ABS, EPS, PU, Mesh Net Weight: 3.97 Lbs (1.8 kg) Fits Head Circumference: S: 21 5/8" to 22 1/16" (55 to 56cm) M: 22 7/16" to 22 13/16" (57 to 58 cm) L: 23 1/4" to 23 5/8" (59 to 60 cm) XL: 24" to 24 7/16" (61 to 62cm) Also In The Box: 1x Helmet 1x Bag 1x Manual Notice: Please measure your head circumference to determine which size is suitable for you before purchasing.