We've taken the most popular colors of our 100% cotton rag mat board and made it available at the lowest price imaginable. And we didn't skimp on quality. This board is made with 100% cotton fibers, with solid color throughout. The 4 ply construction is buffered with 3% calcium carbonate and is acid-free and lignin-free - everything you want in a mat board. In addition to the 4 ply, we offer white rag mat board in 2 ply, 1 ply and an unbuffered 4 ply version. Price per package.