The Dritz® tailor's ham is a handy pressing tool used for pressing and molding darts, sleeve caps and curved seams. 7" x 5" x 4" / 17.8 cm x 12.7 cm x 10.16 cm. Use plaid side (65% cotton/35% polyester) for woolens, synthetic blends & fabrics requiring low to medium temperatures, and cotton side (100% cotton) for cotton, linen & fabrics requiring medium to high temperatures.