After 2 years of having these braces and many crashes. I can say that these braces are one of the best if not the best knee braces out there. 3 years ago I tore my acl and mcl in a crash and got these braces after the fact. I've had plenty of crashes in the following years and not once have severely hurt my knees. But just yesterday I had yet another crash and this time the knee braces stood up to their name and prevented a serious injury. The knee braces did break but in doing that prevented a serious knee injury. All I want to say is thank you but that is not enough.