After a full season of singletrack MTB in Colorado (over 3k miles) but also over 100000 feet of climbing/pedaling - will be getting these again whenever that time comes. They are bulletproof don't slip/slide down and damn are they nice to pedal in. I think they offer great breathability too - of course your gonna sweart but never have I "noticed" them oncecthey are on. Honestly after 3-4 hour rides of punchy technical climbs longer climbs to the top gnarly descents - these knee pads stay put and just "perform". You want to put them on and forget them. They will be right where you want 'em when you need 'em. Wash up nice too no real signs of ANY of the fabric wearing out (other than where I may have impacted things or an occassional pedal spike puts a nice little hole in the back of the pad...it happens). But even so holes wont get bigger and these will last 2 seasons if you wash every 3-5 rides.