Designed to be stronger and more durable than basic binders, these 4 white heavy duty binders feature a tear resistant spine (DuraHinge) and more flexible, split resistant edges (DuraEdge) Slant ring holds 40 50 percent more paper than basic 3 inch binder; 670 sheet capacity Secure but easy to open; One Touch slant rings are back mounted, gap free and release at the touch of a button Extra storage with 4 interior clear pockets; all Heavy Duty binders are made with nonstick PVC free material—no ink transfer Heavy Duty view binder allows for customization on spine, front and back covers Avery Heavy Duty View 3 Ring Binder, 3" One Touch Slant Ring, Holds 8.5" x 11" Paper, 4 White Binders (79793)