Cutting Mat Set - Includes Knife - Black - 8.5 x 11.75 inches Cutting Mat Set - Includes Knife - Black - 8.5 x 11.75 inches Multi-use cutting mat set that includes mat and knife with 5 blades Protects work table and desk surfaces Handy size is easy to store away 8-5/8-Inch by 11-3/4-Inch (22-cm by 30-cm) Has blocked grid in inches and centimeters