... Material:ABS,PE,PP,HDPE Anti-shock Light weight,Good strength,Good toughness Petroleum, chemical, power ,construction, mining Material: ABS, ... ratchetColourRed, Yellow, WhiteSize52-60CMFeatures· Safety helmet with a versatile new shell design of V rib with 6 cooling vents on top ... nylon web suspension with forehead comfort band.· Suspension adjustment offers a sturdy and easy use· Working environment ...