These are good quality compression pants for workout. They are comfortable, light, and keeps you moderately warm (these are not thermal pants, but leggings that retain some body heat). However, these are larger than the size "L" that I am accustomed to. You could say, "L plus" sized compression pants. So if you like your compression pants tight, then get "M" but if you like it loose, then this is good "relaxed L" size. Overall satisfied.