I already own a pair of Docker's pants, which fit perfectly. I was under the impression that purchasing the same size would produce the same results. However, that has not been my experience so far. The pants do fit well, however there are just a bit snug around my buttocks. It is nothing terrible and the pants are not  unwearable as a result. However, when next I purchase such pants I will go up one size.
The pants themselves are great. The material feels really nice.
Thank you.