Looking for a way to get beautiful FLAT embroidered and pieced blocks? This all natural, tightly felted 100% Wool Ironing Mat does the trick! Dense 100% Wool Felt has the natural ability to absorb heat so it's almost like pressing on both sides of any block at the same time! Pieced or embroidered blocks The density of the 1/2" 100% Wool Ironing Mat keeps the heat from transferring through to the surface below. Nicely rounded corners keep wear and tear to a minimum and extend the life of your 100% Wool Ironing Mat. Happy Ironing!