I've been wearing these tights to ashtanga yoga (not hot) and to work out at the gym. They're high waisted and don't slip down, have moderate compression, are really light weight, mesh pockets on the side would be good for holding small items. I bought the black and they're opaque (except for the mesh panels at the calf). I've only had them two weeks and have worn them about 4 times and washed them twice. They seem like really good quality (on par with my Under Armour tights) and the seams are intact. Great fit as well. I was between a small and medium and bought a small for the extra compression. Would probably be fine in a M as well.