OLFA 23-Inch-by-70-Inch Gridded Cutting Mat Set Clipped Self-healing base Durable cutting surface Excellent for sewing, quilting, scrapbooking Easily protect a larger work surface without losing your cutting grid. Includes two 23 x 35 mats and two mat clips Double-sided mats are solid green on one side for general crafting and has yellow grid lines on other side for detailed cutting For use with rotary cutters, art knives and specialty cutters. Designed for use with OLFA rotary cutters, art knives, and specialty cutters,  these cutting mats help protect cutting surfaces and extend the life of the rotary blade. Each mat is 1.5mm thick, double sided and constructed with a triple-layer heat welding process for long life. The dark green base color and yellow grid lines offer good visibility for detailed cutting on one side and general application the reverse. What is self-healing?<span class="a-text-bold"> </span>The self-healing finish reseals surface cuts, providing a continually smooth surface for all cutting projects. The most commonly used mat is rectangular, double-sided for general cutting on one-side and the other for precision cutting. Available in 4 sizes: 6&#034;x8&#034;, 12&#034;x18&#034;, 18&#034;x24&#034;, and 24&#034;x36&#034; Available in 3 colors: Green, Aqua and Pink Easily protect a larger work surface without losing your cutting grid. Includes two 23 x 35 mats and two mat clips Double-sided mats are solid green on one side for general crafting and has yellow grid lines on other side for detailed cutting The one-piece rotating mat is non-slip, stationary bottom layer with interlocking top cutting mat that rotates 360 degrees. Perfect for cutting squares, triangles and diamons. Available in 2 sizes: 12&#034;x12&#034; and 17&#034;x17&#034; This mat is all about convenience with the features of the regular rectangular mat. A folding mat is convenient for travel or storage, and ideal for retreats and classes. Available in 2 sizes: 12&#034;x17&#034; and 17&#034;x24&#034;