Black, dry-wicking golf shorts, worn with a belt. I wear a phone holster on the belt, and put my keys in the front left pocket with a coiled "leash" clipped to a belt loop. I have ridden up to 6 hours without any issues from the keys which is surprising and pleasing.

I can usually find them on closeout for under $20 bucks, and they last me a couple three years of commuting before wearing through.

Not the greatest photo (or physique), but ot shows the pants.