I have both Zoot and Skinz compression tights. At this point, I can't really tell if they do anything or not. Over night, I wake up annoyed with them and rip them off. After a morning workout, I will wear them under my work cloths where I sit at a desk all day. I still don't know if they make one bit of difference. By the end of the day, I cannot wait to get home to take them off. I have found that jumping in a barrel of ice water up to my waist does way, way more than the tights ever did.
I have an older friend (54) that has them and absolutely loves them. He also has really high blood pressure and cholesterol and general health issues. I've come to think that the people that really benefit from them had circulation issues to begin with and possibly didn't know it. Most of the people that convinced me to get them were in their late 30s to 50s. After getting them and not being impressed, I talked to people my age (27), most didn't really feel a difference.
There is one area that I did feel a difference: driving or flying long distances. A 14 hour drive or 6 hour flight and my legs don't feel AS bad as if I go bare. The effect of sitting is still there, just not as noticeable.
With that being said, anyone interested in slightly used Size 2 Zoot tights for a deep discount?