They do not strip manes and are easy to work with, and are made from Natural Rubber. Each reuseable jar has over 1000 bands per jar, as well as a band & braid ripper included! U.S.A. Made. Made from Natural RubberOver 1000 bands per jar, band & braid ripper included!Make tighter braids and bands that last longerDoes not strip manes and are easy to work withHolds longer and does not rub outU.S.A.