These job ticket holders are made of an archival-safe, heavyweight clear polypropylene. They top-loading envelopes are designed for long-term copy-safe storage. The front is made of a clear poly material with a black rigid back. Nylon stitched black vinyl binding goes all around the edges with a nickel metal eyelet up top for hanging on job hooks or nails. They are available in boxes of 25 in a range of sizes. Advantus Corp. is dedicated to providing innovative quality products at fair prices.