Bicycle Helmet Integral Helmet Bicycle Downhill Helmet Children Helmet S 48-53cm M 53-58cm Removable Detachable Chin with 12 Ventilation Holes<br /><br />Product specification:<br /><br />Weight: 406g<br /><br />Material: PC+EPS<br /><br />Colour: Red<br /><br />Head circumference: S 48-53cm, M 53-58cm<br /><br />Model: bicycle helmet, bicycle full face helmet, children's helmet.