The Dritz seam roll is a handy pressing tool used for pressing seams open on long and narrow areas, pant legs and other hard-to-reach areas. Details:Use plaid side (65% cotton/35% polyester) for woolens, synthetic blends and fabrics requiring low to medium temperaturesUse cotton side (100% cotton) for cotton, linen and fabrics requiring medium to high temperaturesPrevents impression marks on right side of fabricSleeve seams press without creating a center crease for a professional lookGreat for pant legs and other hard to reach areas