These ALVIN Mat Boards are excellent for use in presentations, artwork, and drawings. They're made of rigid neutral pH materials, which make for the cleanest possible cut; this means a sleek, professional appearance for your work. The boards are also durable enough to be used in 3-D displays and signs. With over fifty-four years of experience, ALVIN makes sure you need look no further for all your mat and drawing board needs! Package holds 25 in Paper White, size 78.7 x 53.3 x 4.6 cm.