Helmet information:Name: Motorcycle Half Helmet Beanie Vintage German Style Motorcycle Helmet Skull Cap for Men and Women DOT/ECE Approved Half Face Bicycle Scooter ATV UTV Skateboard Helmet Material: high quality ABS material + EPS inner helmet Weight: about 550g Applicable head circumference: M55-56CM,L57-58CM,XL59-60CM,XXL61-62CM Applicable season: all seasons, especially spring and summer Applicability : Motorcycle, Motorbike, Biker, Cruiser, Chopper, Scooter, Skateboarding, Cycling, Jet, Pilot, Touring Helmet, for adult, youth, men, women. You can give it to friends and family, or the best holiday gift for boys and girls PACKING LIST:1 * helmet MEASURING TIPS:Special Note: For an accurate head measurement, wrap a soft (tailor) measuring tape horizontally around your head about 1'' above your eyebrowsIf your head measurement is between two different sizes on the helmet size chart, if you like the head and helmet close to each other, take the smaller size, if you like it looser, take the larger size The yardage of one point