Perforated writing pads are made using a 100 percent chlorinefree manufacturing process and certified by the Chlorine Free Association. Chlorine and its derivatives have proven to be very harmful to the environment, especially aquatic life. These pads feature a green leatherette strip embossed with both gold Skilcraft and recycle logos. Each pad contains 50 ruled sheets (5/16 line spacings) of a 20 lb. basis weight paper attached to a sturdy .050 cal backer board. Pads meet Executive Orders 13514 and 13423.