Executive safety helmet ratchet type. with following specifications. material: made up of polypropylene copolymer extended nape for extra impact protection to the users neck increased vertical clearance for optimum shock absorption ventilated holes which can be opened/ closed with the help of a shutter to prevent any rain water seepage, standard : is 2925:1984, color: super white, model : pn 542 of karam make or equivalent of venus/ 3m/ udyogi , make: karam / venus/ 3m/ udyogi, en 397:2012