I've been wearing them for three years now after rupturing my patellar tendon. The best knee pads I've found by far. They stretch comfortably around my legs and stay put. They flex perfectly with my knees and I forget that I'm wearing them. The only down side is they are somewhat bulky so if you're into skinny pants theyre not going to fit. I'm always falling on rails and I can never feel it through these pads.