The Alpine Industries 9 in. x 3 in. Employees Must Wash Hands Before Returning To Work sign is easy to mount and read with white lettering on a black background for optimal visibility. This pack of 3 signs is constructed of durable ABS plastic. Includes self-adhesive strips that will not fade in extreme temperatures and that can effortlessly stick against smooth and flat surfaces. It will remind your Employees to always keep clean and prevent germs from spreading in your work environment.