Soo at first I was pretty pumped on this product and POC in general. It is super comfy, seemed like it protected well, no strap rub...sweet. Then I actually took a fall with them on and they slid off just as easily as they went on. My knee got cut up pretty nicely. The calf strap (that thing keeps them from sliding down in a fall) is wimpy and super stretchy.
I still wear them, but I have a lurking fear they won't be there when I need them. Oh and if you do have a problem with them good luck getting help from POC customer service, they aren't really into their customers or servicing them.