strong, tear-resistant polypropylene folders divide, organize and color code your many projects. Use by themselves or to subdivide file folders. Sealed on two sides, each folder is made for easy loading and access. Polypropylene means no photocopy transfer – safe protection for your hard work. For 11 x 8 1/2 materials. Contains 5 each smoke, green, red, blue and yellow. Each box includes 25 project folders.