Dockers Men's Perfect Classic Fit Shorts

I own perfect shorts in 6 colors. 5 are made from moderately thick 100% cotton and I live in them year round in a southern climate. Love the fit, the look, the length and the extra pocket. Which matters less to me than to my wife. But she's happy so I'm happy! Why on earth they also sell the Mineral Black pants with the others makes no sense. They are polyester with a bit fancier look that I was not expecting. On the other hand, they could be worn to a fancy country club whereas the cotton ones belong mainly on public courses where they would fit in and be very comfortable.