I have owned these about 6 months now & use every day. (Flooring, trim, roofing, commercial demo ect) That is saying somthing. Most of the kneepads in this price range or higher last about a month or 2 on me. Either the face will seperate from the padding, a button will pop or the belt stiching will rip. I have had none of these issues so far. The padding is very good but once in a while will need to be adjusted by rubbing with thumbs (3 times I can think of) The stiching has not frayed or poped at all. These do not scratch or mar floors. The plastic has held up roofing in summer about 6000 sq-ft so far. If they get muddy I just hand wash & let dry under heater or in sun. I have had cronic knee pain for years & dont cry about it. So perfect fit. If these last a year I will buy a case seriously.