Specification:Weight: 200 g.Material: EPS + PC.Head circumference: 57-65 cm.Ventilation quantity: 21 ventilation openings.Color: red, blue, yellow, white, pink, greenFeatures:21 vents ensure that air flows through the bike helmet and stays cool and comfortable. Effectively reduce air resistance and sweating.The chin side straps are suitable for a head circumference of 57 to 65 cm and make the helmet adjustable to different head sizes.The restraint system on the helmet swivels via the user-friendly dial on the back of the helmet to allow up and down adjustments as well as tension around the head.This mountain bike helmet has been specially developed for adult riders. The material uses the robust and durable EPS body + PC shell that absorbs the impact and protects the head during crash.With removable sun visor, the visor can protect your eyes from sun, rain and mud. If you do not need it, you can remove it. The inner padding is removable, you can easily remove and wash it.Package includes:1 x unisex bicycle helmet.1 x visor