80% cotton and 20% polyester, with scrim. Super-Soft 80/20 combines the softness and breathability of cotton with the durability and stability of polyester. A choice of sizes is available to meet your requirements. Excellent for machine quilting, with 3-5% shrinkage. Up to 10 inches between stitches. Pre-wash by hand only and dry naturally or if pre-washing is not desired, machine wash the finished work on a delicate cycle and dry naturally. Super-Soft Cotton Wadding is made from high quality ethically manufactured cotton with UltraClean carding used to ensure the removal of all impurities that may tarnish finished quilts or damage machine needles.