Versatile Alvin black and white, smooth surface, 20" x 30" x 0.52pt thick mat boards are perfect for drawings and renderings as well as mounting photos, artwork, and presentations. Rigid, neutral pH materials cut cleanly and are durable enough to be used for art projects, signs, 3-D models, and displays. Black on one side, white on the other. PACK OF 25. Alvin mat board is quality-made in the USA.