Designed to outperform laundered rags. Does not use adhesives or binders, so they'll leave no residue behind. Reinforced for strength when wet or dry. Can be used for applying thinners and solvents, in cable lubricant removal, adhesive cleaning and removing grease and soil in tight areas. So sturdy that they can often be used more than once (once you've used them a few times, they're disposable).