This sheet protector keeps documents completely secure within binder rings, and no punching is required. Made of durable nonstick polypropylene, sheet protector keeps important documents safe and won't stick to or lift toner. Acid-free and archival safe, making them ideal for documents you need to store. PVC-free. Load Orientation: Top; Sheet Capacity: N/A; Sheet Protector Type: Ring Binder; Insert Size: N/A.