The 50 quantity box of report covers is an excellent value - about 30 cents per cover. Most other packaging comes out to about a dollar per cover. I also like the 11" height - the same as letter size paper. Staple your pages together first maybe even in the clear cover and then the slider won't come off so easily.
The slide lock doesn't hold tightly enough. Pages kept slipping out when people tried to turn them and read the material. We only used 18 pages capacity is 20. This purchase was a complete waste of money!