I'm fat, old, and out of shape. I bought these because I needed something to run outside in the cold, and all support is appreciated.
I read all the reviews here, and after I decided to buy them, I realized that I am fatter than the largest size - not by much, but I'm 5'10 and 195. I carry most of my weight in my butt and upper thighs, so it knew it would be a stretch (hahaha). I asked customer service about returns before I purchased the item. With their reassurance about the return policy, I bought them.
When I opened the package, I thought, NO WAY. They looked like pants for life-size Barbie. I wore them outside on a 35F day and was really pleased. I wore them to my first 5k race on a 35F Thanksgiving morning, and I felt great.
The support made me feel like a was a real runner. (hahaha) I didn't jiggle, and my knees stayed where they were supposed to. I was warm enough, and I plan on running a new years eve 5k in my snazzy new tights.
I would recommend height over tight for these. If they weren't long enough for the supports to land in the right place, they probably wouldn't feel as good when wearing them.