80% Premium Un-Bleached Cotton, 20% Polyester and needle punched. Heirloom Premium 80/20 Cotton Blend is one of our most popular battings. It offers more loft and less weight than traditional cotton. This blend is made with 80% natural cotton and 20% fine polyester. It is needle punched and has a light resin bonding to provide exceptional strength and durability. It is ideal for hand or machine quilting. Approximate Loft: 1/8in. Shrinkage: 3-5%. Max distance between stitches: 4in.120"X30 yard roll.