JAM Paper Red Plastic 5-in x 10-1/2-in Button and String Expanding File Folder in the Folders department at Lowes.com
Amazon.com : Better Office Products Red Plastic 2 Pocket Folders with Prongs, Heavyweight, Letter Size Poly Folders, 24 Pack, with 3 Metal Prongs Fastener Clips, Red : Office Products
Wexford Plastic folders with Prongs Assorted | Walgreens
Nicky's® Version II Presentation Folder | Rochester 100
Smead Poly Two-Pocket Folder, Tang-style Fastener, Letter, Red (87727)
2-Pocket Plastic Folder with Fasteners, Red Pocket Folder
Jam Paper Plastic Two-pocket School Pop Folders W/metal Prongs Fasteners Red 382ecredb : Target