A dark charcoal gray back cover and spine would make a great addition to your bound documents-and we have it right here! The Classic Advantage line of thermal covers from Coverbind is a great way to impress your clients. With a dark charcoal hue, the back and spine have a satin finish while the front cover is a matte frosted transparent. Their sheet capacity ranges from 15 to 500 sheets of 20lb paper, so they'll be perfect for any size of project. We carry them in 12 different sizes and a variety pack, which includes all of those sizes. Keep things sleek and professional with Coverbind graphite covers.