I have a very bad knee and after a few hours on it, it begins to swell and hurt. I had a particually long day on my feet today and couldn't wait to try these. IT FEELS SO GOOD! It fits really well and doesn't even act like it's going to slip. It fits snuggly and give my knee the needed support it needs when it swells and feels kind of squishy. My other knee is good, so I will have a spare for my bad knee since they come in pairs. Good product!