Featuresr integrated in mold pc shell with multi dimensional cone shape eps impact foamr ventilated channel system with13 vents provide cooling airflow when youre riding hardr one hand fit adjustment back wheel for comfort wearing suitable for head circumference 220 244 inchr removable inner quality padding to absorb shocks upon impact and extra sweatr breathable removable and soft chin guard and y s fixing strap for comfort fitr visor attached protects your eye from rain sun mud