My Dad Is Fließnenleger and buys for years often new, but always favorable kneepads at the hardware store. Of course, one always do after the permanent load knees hurt, so I decided to give him higher quality saver for Christmas. A big advantage over the hardware store herkömmlcihen savers is definitely the mix of materials, which by one, over the gel layer lying, makes fabric that knees are not as cold as in solid rubber pads. The gel layer in saver clings well to the knee and prevents the hard plastic shell that stones or dirt penetrate into the material and the knee. My dad is very enthusiastic and carries the savers since each day at work, so I would recommend him to anyone who needs to weigh his knees often and heavily. A similar product, except by the company "Technics" I have not yet discovered.