50% cotton and 50% bamboo wadding with scrim. Great for both hand and machine quilting. The bamboo/cotton blend is both anti-bacterial and eco friendly and has a smooth silky feel with a beautiful drape. The cotton adds some extra body to the luxurious bamboo. 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.