Learn more here: http://bit.ly/1O771r5 Strong, tear-resistant recycled 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 8 1/2 x 11 materials. Clear. 25/BX. This product contains at least 70% material diverted from the solid waste stream and meets the FTC definition of recycled. It may not meet your state’s definition of recycled.