If we were to own one winter training pant, this would be it. We get the weather-beating protection of a soft shell in the front and a wicking, breathable knit back. Strategically designed so that as we move, we can stretch and breathe while staying dry and protected. Slim, but not a tight fit. 8" ankle zips. XS(2), S(4-6), M(8-10), L(12-14), XL(16).