We print on a durable, light weight polypropylene plastic. Brand names are Coroplast and Cor-x. The fluted material is water and fade resistant, lasting up to 2 years of outdoor exposure. The flutes add rigidity and also are a nifty place to insert the wire stands.

Corrogated sheets come in 12 colors, however, if you desire a colored background other than yellow, reverse printing on white or yellow stock offers a brighter sign and cost you less too!