Surprise! There is polyester in your "100% Cotton" diapers! Where? The two seams running through the middle and the outside binding are made of a polyester based thread! I've always stayed away from diapers because polyester can scratch your paint. Diapers are great for babies, but I have a better solution. Our Buffing Cloths are truly 100% Cotton. The cotton is woven from much longer yarns, making them softer and practically lint-free. With no stitching running through the middle, they are bound with 100% cotton thread. Be assured this is the finest cotton cloth available to remove polish and wax from your paint. Perfect for use with Speed Shine®, too. The 19" x 19" size is perfect for folding into quarters and buffing out wax for better clarity. Machine washable so they are kind to the environment and your wallet, too! Comes to you in a nice set of ten.