Heavy-duty polypropylene folders are tear- and water-resistant. Available in four opaque colours (Blue, Green, Red and Yellow) for filing system speed and efficiency. File Folder Type: Top Tab; Folder Material: Polypropylene; Colour(s): Yellow; Assortment: N/A. This supplier will be closed on 11/24, 11/25, 12/23, 12/26, 1/2 for the holidays. The shipping cut off is UPS's cut off of 12/15 to try and have the products delivered by Christmas.