For users who prefer a cutting mat work surface at all times, these unique drawing boards can be mounted in place of normal boards on all Alvin tables that accept 30" x 42" tops. The 24" x 36" gridded cutting mat, green on one side and black on the other, is truly inlaid into the board to create a flush work surface. The cutting mat won’t slide around under pressure and is easy to replace when worn out – no need to buy a new board. Durable PVC board surface with rounded corners. Cutting mat and board packaged together in one box.