Map of the Continents 7 Poster Set Map of the Continents 7 Poster Set (7) 12" x 18" Posters on High Quality heavy 80lb satin cover paper - durable and can stand up to all kinds of abuse and it won't pucker and wrinkle like others do. These new posters are PosterEnvy EXCLUSIVEs! That means you won't find it anywhere else! We ship orders out FAST (usually with 24 hours) in heavy duty cardboard tubes! PosterEnvy has sold thousands of unique educational posters to thousands of happy customers around the world!