It is a high density, lightweight and integrally molded helmet.Durable, comfortable, 18 vents, put cold air, warm air out.Ventilation is good, easy to wear, easy to clean.Sweat absorption lining, chin pad, visor is attached.Adjustable strap, lightweight for safe cycling Ideal for commuting and adultsColor: Black + White/Black + PinkAge Group: AdultsVent quantity: 18 ventsMaterial: EPS & PCHead width: 19 cm / 7.5 inHead circumference: 54 to 64 cm / 21.2 to 25.2 inProduct size: about 27 x 21.5 x 15 cm / 10.6 x 8.5 x 5.9 inGross weight: Approximately 263 g / 9.3 ozPackage Contents:1 x Bike helmet1 x Visor