Storex Thicker Poly Two-Pocket Folder with Plastic Prongs, Assorted Colors, 5-Pack (50324U01C) Capacity: 20 sheets; assorted colors, 5 pack All-plastic prongs are safer to use than standard metal clips Flexible and fits in a backpack with ease Thicker Material than standard poly folders and report covers; will not tear or fray Reusable - Lasts much longer than cardboard portfolios