Mountain Mist Wool Pressing Mat 17 x 24 x 1/2 in Mountain Mist Wool 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 (½” thick), tightly felted, firm pressing mat. Perfect for use beside your sewing machine and portable for retreats and classes. A must-have for every sewing/quilting enthusiast. Dimensions are 17 x 24 x 1/2 inches.