... 1. water-resistant, oil-resistant, chemical material resistant , high reflectivity 2. reflective light for keeping safety when walking in the dark ... BULGE LINE TO PREVENT THE REFLECTOR MOVE OR COME OUT . 2. THEN CLASP THE REFLECTOR3.CHANGE ANOTHER SIDE4.DO THE SAME ... use many materials to produce ,such as ABS,PP,.PE,PS.PVC,PC,PBT,POM,PET,LDPE,TPE and so on ...