The Creative Grids® rotary cutting mats are self-healing and double-sided. Our 5 layer mat gives you two cutting surfaces and two separate layers of self-healing material. One side features 1 inch grid with 1/8 inch markings. All numbers are printed outside of the grid area, so they are always visible as you work. Popular 1-1/2 inch cuts are highlighted with white stars, 2-1/2 inch cuts with white squares, for both horizontal and vertical cutting. 1/8, 1/4, 1/3, 3/8, 1/2, 5/8, and 2/3 yard cuts are all marked for easy reference. 45 and 60 degree diagonal lines are also included. The second side is designed to use with the Creative Grids® Stripology series of rulers. This side has 1 inch vertical lines, 1/2 inch horizontal lines, and 45 degree diagonal lines. Line up the fabric and rulers on the spaced horizontal half inch grid lines. No other distracting markings needed.