Avery 76000 Secure Top Sheet Protectors, Super Heavy Gauge, Letter, Diamond Clear (Pack of 25) Ideal for long-term storage, non-stick polypropylene material is acid-free and won't lift print. Top loadingno need to punch inserts. Clear binding edge for a professional look. Protects 8 1/2" x 11" insert sheets and smaller items. Convenient top flap keeps contents secure Ideal for long-term storage, non-stick polypropylene material Top loadingno need to punch inserts Clear binding edge for a professional look