The Pina Zangaro Frost 1" 11x17" 3-Ring Binder (LS) is a translucent matte-finish 1/8" acrylic, soft black bookbinder's cloth and the best steel 3-Ring mechanisms available. The end result is a binder that will last a lifetime, and look good doing so. Use with standard 3-Hole punched sheets. Polypropylene Express Sheet Protectors or Adhesive Hinge Strips. Add your identify to the binder by having Pina Zangaro laser etch or color imprint your name or logo on the front cover.