Guys, a quick question about your Cliff Braces.

I wore mine again last night, and it kept slipping down (not falling off exactly, but gradually riding anklewards through the class). I measured my knee according to the sizing chart and bought a large, but as I said in my previous post, I think I may be between sizes.

My question is - in your opinion, should a "good fit" for these offer some noticeable compression (gripping the knee), or is this brace more about the padding rather than the stabilizing?

I would just buy a medium and check the difference for myself, but had such a hard time with the company that shipped mine from Amazon that I'd like to at least hear a second opinion before going ahead with the whole exchange malarky.