Features:- Competitive level AM helmet, shell thickness 22mm. For your life to provide more security in the mountain riding.- Has a good ventilation (18 vents), both safe and breathable cool.- Insect net design for wild mountain riding to bring more security.- Built-in EPS absorber shock core, with aramid filament to strengthen the hardness.- With adjustable sun visor, sophisticated design, durable.Number of Holes: 18 HolesDensity: 75g / LHead Circumference: L (59-62CM)Category: Removable Hat Helmet One FormingColor: Black，Red, Gray, WhitePackage Weight : 844 G / 29.77 OuncesPackage Dimensions (L*W*H) : 320*250*185 MM / 12.60*9.84*7.28 InchesRetail Packaging: Yes, General BoxPackage Include:1 x Bicycle Helmet