After trying this product, I was left disappointed. While it may be advertised for "sensitive material" it didn`t provide adequate protection and actually caused more harm than good. As an industrial and scientific worker, I need reliable tools that won't cause damage to the materials I'm working with. Unfortunately, THESE slip-on covers fell short. The only pro I could find was that they were easy to put on, but that didn't make up for the cons of inadequate protection and actually causing scratches. I'll be looking for a different solution for my sensitive materials..