Thickened Plastic&Long Lasting: The folders for school are made from heavy weight acid-free poly plastic, better than paper material, which is tear and water resistant and easy to clean. The poly material of this pocket folder makes it far more durable to last the entire school year.Reference Guide: Our school folders with pockets prints the regular conversion tables on the interior side pockets for quick reference, including metric conversion tables for weight and length, rulers, a multiplication table, tables of Avoirdupois etc.Unique 4-Pocket Design: The new version with trapezoidal designs allow your paperwork easier to put in and take out while keeping them well inside and not slipping out. Two sets of vertical and horizontal pockets can also store your important loose sheets and handouts somewhere safe.All Colors You Need: The school folders set come with 5 bright colors, which are the school wanted. Ideal to color code notes and assignments so they match to make them easier to find.3 Hole Punches&Standard Size: The folded size of plastic folders is 9.5 x 11.6 inches, this folder has a total capacity of 80 sheets of paper. The pocket folders feature 3 hole punches, ideal for organizing paper documents and fitting well in 3-ring binder.