This 100% wool pressing mat is 9in x 12in x 1/2in thick. It creates a perfect pressing surface for your embroideries, quilt blocks, garments and more! Use with or without steam for a professional result. Because of its dense natural fiber construction, it holds the heat and is like pressing your project on both sides at the same time. Place it near your sewing machine top save trips to the ironing board. The convenient size makes it perfect to stash in your sewing bag to take to class.