Putting aside the all-important choice of running shoes, I name these as my best lower-half running purchase. Although finishing above the knee, I am not really troubled by calf issues when I run in these and they fit well, too. With a mesh crotch area (ventilation?) they are not really designed for outer use but fit well under shorts like footballers do. They do get hot - or you will in them - but not excessively so and I would say that they help my running performance and injury prevention. I don't have another make of compression shorts to compare them to but they are far, far better than my 3/4, capri-style run tights that ride up and worse; are shiny. These stay in place and work.