Felted Wool Pressing Mat 100% Premium Wool Made in USA Press any pieced or embroidered block with ease. The density of this high-quality 100% felted wool mat absorbs seams and stitches, effectively pressing both sides at once. Block knitted projects as well by pinning them directly to the mat. The texture of the wool stops fabrics from shifting so there is no distortion when pressing. The pressing mat can be used with a dry iron on any surface. If using steam, place the mat on a protected surface since moisture does go through the mat and can harm the surface below. Never place the mat on a rotary cutting mat when pressing. The heat could warp the cutting mat. If mat feels damp after use, hang to air-dry before storing. Wash the mat occasionally by rinsing it in cold water and hanging the mat until dry especially if using a spray starch. Safe surfaces include Formica, Corian, stone, and metal (an ironing board). Wood and painted surfaces should be avoided. A wool mat is a handy tool for quick pressing when kept next to your sewing machine.