Plastic Envelopes Are Made Of Polypropylene Plastic And Come In 6 Different Colors, 2 Of Each Color. Plastic File Folders Are Waterproof, Tear-proof, And Durable, And Can Well Protect Documents And Office Products From Damage. Large Capacity: The Binder Pocket Features An Expandable Design That Allows The Pocket Sides To Expand To 0.8 Inches/2cm High, And The Binder Can Easily Hold At Least 200 Sheets Of A4 Paper, Or Even More. Multi-punch Spine Design: Binder Pocket With Multi-punch Holes For Use With Most Standard 2/3/4/11 Ring Binders. Fits Most Lever Arch And Ring Binder Folders. The A4 Plastic Folder Is Also Top-opening For Quick And Easy Access To Documents. Practical Design: Clear Plastic Material Allows Viewing Of Contents Without Opening, Each Folder Has A Label Pocket, Multiple Colors And Labels To Categorize And Identify Your Documents. Snaps Keep Contents Secure. Multiple Uses: The Binder Is Lightweight And Suitable For Daily Use, Keeping Documents Organized And Easy To Carry To Store Documen