WOLFBIKE Bicycle Cycling Adult Carbon Helmet BMX MTB Off Road Hero Helmet 19 Holes Visor Superlight With 19 holes design to reduce the wind resistance, Well-ventilated and comfortable Detachable lining can be washed when it is dirty Free size with adjustable equipment to fit all kinds of head circumference Non-in-mold construction with particle to strengthen the intensity Material: PVC+EPS, Certification: ISO9000. Net Weight: 0.24KG