Store loose paperwork papers in your binder with one durable, convenient pocket. Gusset expands 1" for additional capacity of up to 200 sheets. Side-loading pocket is secured with a hook-and-loop closure. The edge is three-hole punched so you can slip it into standard three-ring binders. Durable, acid-free polypropylene is clear for easy viewing. Pocket holds documents up to 8-1/2" x 11".