Binders chipboard is made from 100% recycled / reclaimed papers and at least 60% post-consumer waste, Ring binder has half inch round rings with 200-225 sheet capacity depending on paper thickness, Rust resistant ring metals come with double booster for easy opening and closure, Special ribbed seal adds strength at the hinge for extra durability to tackle those special school, work, and home projects, Traditional storage binders covered with premium vinyl in a wide variety of colors sure to match that special color you are looking for