I use cotton leggings. I have some that are 100% cotton and others that are 99% cotton. But it depends on what you want. I mostly wear them under pants when it’s cold outside or as home wear, but I have one or two pairs that I wear in the summer (sun protection and other reasons). I like them and they work well for me. But my guess is it depends on what you want to achieve with them. If you have one of these butts that make you want to “poing” it with your finger, I’m not sure each model will look like a tight second skin. That you would need to try out. Also the ankle, if you have very thin ankles and want the leggings to be very tight at that point, you should definitely try them on first.