MOUNTAIN MIST-Wool Pressing Mat. Pressing mats make precise pressing easy! The mat absorbs heat, so when pressing your quilt block shapes or sewing project, it’s like pressing on both sides of the fabric at the same time. The dense, half-inch thick, tightly felted, firm pressing mat is available in a variety of sizes. Perfect for use beside your sewing machine and portable for retreats and classes. A must-have for every sewing and quilting enthusiast! Made in USA.