This small binder is made from quality black vinyl that's sealed over rigid board to provide durability. The 3 rings and the opening and closing mechanisms are nickel-plated. Ideal for keeping your half sheet pages organized. The overall dimensions of the binder are 7 1/8 inches wide by 9 1/8 inches high which holds a 5½ x 8½ page size perfectly. It easily fits in your desk drawer or on your end table next to your phone.