These tights are terrific: I'm six feet tall, mostly legs, and the medium is a perfect length. The compression is just right, too---I don't have to worry about jiggle when I'm working out, but I also don't feel like I'm wearing a girdle. I'm going to get another pair.
I haven't worked out in these yet but I mostly bought them to just wear as leggings. you could never tell they are workout pants. they are very blank very comfy and very long. great buy!
I purchased a black pair and a gray pair in size small since reviews stated they run large/long. I am generally a size m or 8 and the small was a good choice as I feel the medium may be too big. I would recommend to size down. I would recommend these to anyone for the comfort, feel and fit.