This batting will not separate; bunch or beard. This 100-percent USA grown cotton is punched with hundreds of needles through a thin base material (polymer fibers) to prevent tearing; shifting; migrating or creeping through the cover fabric making it 87.5-percent cotton/12.5-percent polymer fibers. Needled cotton's flexibility makes it ideal for both inside and outside use. Fibers are held together without glue so a quilting needle glides easily through the batting. What an incredible difference. No need to pre-wash; machine washable after quilted; can be used as an exterior fabric; quilt up to 10in apart; easily dyes and your fabric will cling to the batting while quilting. Made in USA.