I have been using these rags in a box for about ten years now for clean up in my woodworking, auto, and leatherwork. They are a great, tough, absorbent, cheap (around 0.06 cents apiece in bulk), disposable alternative to more expensive cotton rags.  No, these rags are not made out of cotton but are a felted wood fiber. They are super absorbent, better than cotton, and when you get them cruddy you can just toss them rather than face the wrath of your significant other after you run a bunch of oily rags through the washing machine! They are not affected by oils, alcohol,  or any solvent you might find in normal shop use. One great benefit, at least for me, is that they do not "shed" little pieces of fiber like cotton rags do when you are applying,  or cleaning up, stains or wipe on finishes. One final caveat is to be sure that you are buying these towels from "fulfilled by Amazon" so you get the 8 box case rather than the scam artist who is selling the single box  for the case price!