These binders are designed to hold standard 8-1/2" x 11" letter-sized paper or documents. They are made using blue,16-mil thick, static-dissipative vinyl, heat-sealed onto a cardboard stiffener. An "ESD Sensitive Area" symbol is hot stamped on the spine and front cover. Static-safe, 3-hole punched, sheet protectors fit into the binders and are made using clear, 3-mil thick, amine-free polyolefin. The surface resistivity of binders and sheet protectors is 1011 ohms.