Material: Helmet use high hardness shell+high-density inner, strong collision resistance withstand strong strength, head protection added cushioning harm reduction.- Soft and comfortable interior. Easy to open and close, standard clear shield included- The flexibility of the strap make it a unisex product and would fit both well for both boys and girls.- Size guide to ensure proper sizing please do the following: take a head measurement with a cloth tape measure. Wrap tape measure around your head one inch or 25mm or 2. 5cm above your eyebrows directly above your ears and to the widest area at the back of your head. The widest measurement will give you your helmet size. If you dont have a tape measure you can use a piece of string and measure using a ruler.- Included Components: 1 x Helmet- For Non-Motorized Two Wheeler