So I've been using these for an 'off-label' purpose and I think they've been pretty good at it. I have slight varicose veining starting, and have been concerned with that getting worse so I thought I'd try these on the treadmill.  First off, I feel like I'm wearing thick women's knee-high pantyhose because of the fabric, but that's OK since most compression garments for working out are made of the same materials. I wear them under sweatpants and with a pair of running socks for added cushion to my feet.  The socks are pretty snug around my calves which at first made me a little paranoid that they might be too tight but I've found that I forget about that pretty quick and it's not an issue when I jog or run. Overall, they seem to keep my legs less fatigued - which could be a placebo effect which I can admit to. Hopefully they're doing what they're suppose to do.  Btw - they say not to dry them in the dryer. I have and have not had any problems, they seem the same to me but I'm not that picky about things like that and there's no way I'm separating them in the laundry.