OLFA 12" Rotating Self-Healing Rotary Mat 2-piece mat has a non-slip bottom layer with interlocking green top cutting mat, yellow grid lines and markings, that rotates 360 degrees smoothly Self-healing finish reseals surface cuts, providing a continually smooth surface for all cutting projects Store flat and out of direct sunlight For use only with rotary blades and blades; fixed-blade knives blade may damage mat Available in two sizes, 12" or 17" Designed for use with OLFA rotary 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? The self-healing finish reseals surface cuts, providing a continually smooth surface for all cutting projects. Take the difficulty out of tricky tasks as fashioning true bias strips, cutting squares and triangles, and squaring up blocks to complete projects. Self-healing mats that rotate so you don&#039;t have to! Two piece mat Smoothly rotates 360 With 2 different size Rotating Mats to choose from, you&#039;re sure to find the right one to protect your work surface. Available in 12x12 and 17x17 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;