Bands that withstand the test of time. X-treme File Bands are 7" x 1/8" latex free bands made from our proprietary EPDM (Ethylene Propylene Diene Monomer) formula. They are UV and ozone resistant, and meet the needs of any active or archival filing system. They are the best solution for those who are required to keep documents on hand for an extended period of time. Black. Packed in 1 pound boxes. Made in the U.S.A.