Project Folders are made from heavyweight, acid-free polypropylene. Open two sides with thumb cut front for easy access to documents. Unique corner design allows folders to expand to hold up to 100 pages. Reduced glare. For 8.5" x 11" document storage. This product will be cheerfully replaced with one of equal value if defective in materials, manufacturing or packaging at the time of purchase. Except for such replacement, this product is sold without warranty or liability even though defect, damage or loss is caused by negligence or other fault.