Made of durable, clear plastic to protect bound documents from spills and tear, the high-quality Printfinish Poly binding cover is designed to hold up against frequent use, making them perfect for schools, any kind of business, or personal applications.This PVC binding cover features square-corner pages for a sharp and professional look and works with Comb, Spiral, Wire and any other binding system.For almost 50 years Printfinish has been a North American distributor in Binding Equipment and Supplies!