Pendaflex® Assorted Color Poly Expanding File Jacket Provides Versatility And Protection To The Documents You Need To Store. The Jackets Are Made Of A Sturdy Polypropylene Material To Provide Resistance To Water And Tearing. Polypropylene Construction Is Waterproof And Tear-Resistant. Jackets Expand Up To 1" To Accommodate More Files. Available In Assorted Colors, These Polypropylene Expanding File Jackets Come In A Pack Of 10 To Suit Your Needs.