These pads are amazing. They are comfortable and extremely effective for taking hits. They took about two rides to "break in", but after that they are extremely comfortable. They "break in" period was really for my legs to get use to them. They had some minor pinching and light chaffing for the first two rides but nothing horrible. This has completely gone away after the third ride and they now perform above expectations. They are streamline and stay out of the way. I have hung them on my top tube a couple of times but that is probably because of my sloppy riding style.They are malleable and will harden on impact. I have taken a hard crash test and they performed excellent. They stayed in place and did not slide. If your looking for a high quality knee pad the search ends here. The sizing chart for me was right on and they fit well. If your are a bit over or in between go with the smaller size first.