Mandatory Signs are a Blue circle containing a white image denoting that a specific course of action must be taken. These signs help workers and members of the public instantly understand what course of action is required of them, using simple verbal commands and easily recognisable icons. Use to highlight areas in and around your facility that the relevant PPE must be worn. Size: W200mm x H300mm. 1.2mm Polypropylene Designed and manufactured in the UK.