These are a bit thicker in compared to the air cooling but I like it for the colder weather.
The leggings is really moisture-wicking, and keeps my body fresh even during the workout. The material feels very high-quality, as it's very compressing, moisture-wicking and stretchy at the same time. I wear my pairs to they gym everyday. Love them.
Think I might have gotten a medium for more relaxed fit, since I gained quite some weight recently, but given that the leggings was still very stretchy. It's very body-sculpting, and holds your body in place for tough routines. Recommend for cross fits or weight lifting training.