The National Marker Company sign shows the legend ?NOTICE - HARD HATS MUST BE WORN ON THIS CONSTRUCTION PROJECT? in clear, bold letters for easy legibility. The hard hat notice sign is used to enforce safety measures and inform the workers that hard hat is mandatory on the construction site. The use of White text on the Blue base with Black text on a White base makes sure that the message is clearly visible, even from a distance. The material is UV resistant, chemical resistant, graffiti proof and has the Sign Muscle coating that protects the text against fading, scratches, scuffing, mold, and moisture.