These are perfect. I used microfiber cleaning cloths for years until I found out they were damaging to sea life. I then tried organic cotton reusable unpaper towels, rags made from wood fibers, etc. They all worked well for certain types of cleaning, but they didn’t work well on things like mirrors or stainless steel. These work exactly like microfiber, but only better. They don’t leave behind the little fibers that microfiber normally does when cleaning mirrors. They clean leaving no fibers behind and leaving everything streak free. They are also thin enough that they are easy to use and easy to clean, but not so thin that they fall apart after a few uses. Between these, the organic unpaper towels, Wowables thin sponge cloths made of cellulose and non-GMO cotton and dish scrubbies made from coconut coir I’ve got all my cleaning needs covered without using damaging synthetic fibers or plastic (except maybe the packaging of the sponge cloths — I don’t remember how they came). I would use these even more except the other cloths I use are less than a dollar a cloth, so I save these for certain things where they work the best. Hopefully some day, they’ll be offered in a bulk pack at a much lower cost per item.