... 1.In-Mold,PC SHELL,Aerodynamic shell design 2.HIGH density EPS 3.Quick release buckle 4.CERT.:CPSC/CE bicycle helmet1.The shell: In ... -Mold,PC SHELL,Aerodynamic shell design2.Buffer: HIGH density EPS, have good absorption ... buckle6.Homologation:CPSC7.Size:XS,S,M,L(54.~60CM IN-Mold bike helmet