Cardinal Premier EasyOpen Locking Letter-Size (8 1/2" x 11") Slant D-Ring Binder - Letter - 8 1/2" (215.90 mm) x 11" (279.40 mm) Sheet Size - 1050 Sheet Capacity - 3 x 4" (101.60 mm) Ring(s) - Pocket(s): 4, Internal - Polypropylene, Fiber - Blue - Recycled - Heavy Duty, Wrinkle Resistant, Long Lasti