We definitely know what we're doing when it comes to quilter needs. At ½ inch thick - our wool pressing mat keeps a stiff board-like shape while still being lightweight, flexible and portable. Our Package includes a large 22x60 wool pressing mat. Wool ironing mats are specifically designed to allow heat to flow through, in turn pressing your quilting blocks as if you have ironed both sides. With the texture of the surface, all blocks, and seams are pressed perfectly straight with a seriously crisp finish. Because this ironing mat is made from thick felted wool, it accommodates placement pins beautifully. Even without pins, your fabric will not shift on the woolen surface. 5-star heat-resistance Outstanding quality and durability and Easy to clean