I don't know where to start with these.
I'm 6"2 175lb 32" waist and opted for large. The fitting is at the waist and top is OK but the legs are way too short for a knicker and the elastic grippers just don't grip so they ride up all the way to your knee which is very annoying. Also the fabric is pretty much a summer weight lycra so they won't keep you as warm as say regular knicks with knee warmers. I don't like the pad - the padding is too thick towards the front which makes it a bit uncomfortable for the family jewels.
Can't recommend sorry...