Dritz s Omnigrid Travel Kit is a Mat and Ruler Set. Omnigrid mats have several unique features that quilters appreciate: One side features a medium green background with bright yellow grid lines and the other side features a solid grey without grid lines. Both sides feature a forgiving surface and will not damage your rotary cutter. The grids on these mats feature .5 inch markings to the 1/8 inch and a full surface grid with 45 degree angles as well. This set also contains three of Omnigrid s acrylic rulers: 1-by-6 inch, 4-by-4 inch, and 6-by-6 inch. Mat measures 8.75 by 11.75 inches. Omnigrid Miniature Kit is a perfect gift for Quilting, Crafts, and Memory Books. Portable and convenient. Kit Includes: 1 inch-by-6 inch Ruler, 4 inch-by-4 inch Grid Ruler, 6 inch-by-6 inch Grid Ruler, and 8.75 inch-by- 11.75 inch Omnigrid Mat.