Size A3 - 12" x 18" SELF-HEALING CUTTING MAT - custom designed for usability after extensive study of what customers want. You'll never want another mat after using this one. PVC recycled material. 5 layer PVC mat, finest and most durable available for all forms of arts, fabric work, quilting, scrapbooking and photography. Any form of cutter can be used with this mat. Cuts just disappear! Quintessential Thackery example of thoughtful design: -- Reversible - Green side in INCHES -- black side in CENTIMETERS - .01 mm tolerance for accuracy! -- Tabs for standard sizes for paper and photographs -- Common drawing and cutting angles included -- Tired of tracking to the edge of the mat for the inch? We've solved it by including size markings up and across the mat! Never scan to the edge again. -- Measurement lines stretch beyond where normal mats go, when your media covers the markings, you can still see them! -- Warp-Proof -- Can be used as a drawing/writing pad or even a mouse pad AVAILABLE IN 9x12 A4, 18x12 A3, 18x24 A2 and extra large 24x36 A1 **Please note that international, Alaska and Hawaii orders, shipping has to be calculated on an individual?s address. Once you have placed your order, we will contact you with an updated shipping cost.