It folds brilliantly. It unfolds seamlessly. The OLFA Folding Cutting Mat gives you a durable cutting surface to make your quilting and crafting projects effortless, wherever you are. Mat folds in half for convenient travel or storage, and is perfect for taking to classes or retreats. 2.5mm thick. Store flat and out of direct sunlight. For use with rotary blades and fixed-blade knives. Available in 12” x 17” and 17” x 24”.