Based in Berkley California, Powis Parker is the manufacturer of the Fastback line of binding equipment and supplies. Known throughout the world for its professional look Fastback binding is trusted by countless companies for their image. These covers are designed by Powis to match the Fastback line of tape binding strips. Whether you need a binder cover to work with Superstrips, a comp cover to work with Composition strips. Take a look at the options below and order your covers today.