Expand the life of your documents by providing maximum durability. The thickness of these vinyl sheet protectors offers outstanding performance in preserving and protecting high-use documents, letters and reports. Uniquely shaped corners make pages easy to turn. Presentations stand out with heavy, rigid construction. No sheet punching necessary, since holders are pre-punched to fit with a standard three-ring binder. For 8 1/2" x 11" size document storage.