... .In-Mold,PC SHELL,Aerodynamic shell design 2.HIGH density EPS 3.Quick release buckle 4.CERT.:CPSC/CE bicycle helmet1 ... : In-Mold,PC SHELL,Aerodynamic shell design2.Buffer: HIGH density EPS, have good absorption of crash energy3.The Inner layer : Easily ... (54.~60CM Bicycle helmet for head production, material in black EPS and PVC