This is a great idea. I only use one file per person and this would be the perfect answer to not carrying around tons of files. You can use one file and peel off the top one to expose a new one, how clever Revlon. They come in 3 different colors, green, blue and black and the price is pretty good at $4.49. They can be found at your local drugstores. Off to Duane Reade I go.