Ordered these on spec having tried a few other brands such as Patagonia and Swix.The Stoic craftmanship is excellent, the material abrasion resistant, and it is quite windproof. Not sure of how waterproof they are yet as they have been only used in cold dry conditions down to 0 F, only requiring a thin pair of lycra tights underneath at the lower temperatures..The material has enough stretch to allow lots of movement.They have been used for snowshoeing, skitouring and dog walking and they are quite breathable despite having no leg ventilation available.
I normally wear an 8 or 10 ,an athletic build,5'5" not too curvy ,leg 32"and went with the large after other reviews. The thighs are narrow but comfy. The waist band is quite low and requires a belt. The legs would fit a much longer leg but they can be done up around boots and work fine.
The pockets are not too functional, as the front leg is small and can't even carry a small pocket camera (an energy bar will fit in though.)
The back pockets are on the shaping seams and not too convenient to reach.I still like the pants as when they are worn it is cold enough that removing gloves and reaching into pant pockets is not a priority.
Overall they are a great deal for the money and quite slimming.