These just smear your lenses.leaves a smudgey filmNot sure about durability from constant use, as I don't use it that much. But when I do they clean my glasses well. Occasionally I have to use my cloth to clean the edges but these are great.What I liked:Extremely easy to use and carry. It doesn't take much space. It does a great job cleaning the lenses. You get 5 for the price which makes it very affordable.What I didn't like:The first one I got broke easily. I'm giving them the benefit of the doubt and I'm thinking i got a defective one.I'm unsure if they can be cleaned out with soqp and water. Because you use them once and they pretty dirty. Seller should have instructions on this because I doubt this are just for one use.jSmall and portable. Cleans glasses well. Works well and nice quantity to keep on everywhereThese are ok. They are stiff so the can’t clean the corners really. Would be better if the pads were softer to be able to bend and fit in the corners. Probably best for circle type frames.The package comes with 5 pieces of mini eyeglasses wiper tongs. Tested many times to our eyewear, however, it doesn’t completely remove the dirt and oil especially the round edges.