The Omnigrid cutting mat is ideal for larger-scale sewing and quilting projects. It accommodates a standard folded width of 45" fabric. This mat is a convenient size for sewing and quilting classes, workshops and retreats. It's also perfect for spacious home studios. Details: 18" x 24" Features a 1" grid, and 1/8" edge markings and angle line markings on one side Accommodates a standard folded width of 45" fabric The opposite side is metric, with a centimeter grid, millimeter edge markings and angle line markings Double sided mat For use with a rotary cutter or a straight-edge blade Ideal for ruler/grid alignment and cutting