... strength,Good toughness Petroleum, chemical, power ,construction, mining Material: ABS, PE, PP, HDPE is availableColor: red, blue, yellow, white ... pinlock, ratchetColourRed, Yellow, WhiteSize52-60CMFeatures· Safety helmet with a versatile new shell design of V rib with 6 cooling vents on top rain ... this demand , please free to contact me . hABS Safety Helmet with 6 cooling vents on top of the shell