The Omnigrid double-sided cutting mat is ideal for larger-scale sewing and quilting projects because it accommodates a standard folded width of 45" fabric. It is a convenient size for sewing and quilting classes, workshops and retreats. It's also perfect for spacious home studios. Features a 1" grid, and 1/8" edge markings and angle line markings on one side; the opposite side is metric, with a centimeter grid, millimeter edge markings, and angle line markings. Mat is ideal for ruler/grid alignment and cutting. Couple your Omnigrid mat with an Omnigrid ruler for ultimate measuring and cutting accuracy. Use with a rotary cutter or a straight-edge blade.Details:Green18" x 24"1" grid with 1/8" edge markingsMetric grid on opposite sidePair with Omingrid ruler for best accuracyPlastic