C-Line 2-pocket Heavyweight Poly Portfolio Pocket - With the help of this two-pocket folder, your letter-size papers can stay organized while still remaining accessible in your three-ring binder. Heavyweight polypropylene material resists tearing for long-lasting organization. Cutouts at the top and bottom keep it from being caught in your binder's open-close mechanism. Pre-punched edge allows easy organization in your three-ring binder.