I happen to be home today and don't normally see the mail person. We used to have a woman and in the summer she wore the uniform shorts and a short sleeved button down uniform shirt. I was just outside getting something from my car and noticed the mailman had on the uniform shorts with a blue t shirt with the sleeves cut off and some kind of team name printed on it? He also had a red white an blue bandana tied around his head. It's pretty warm here today (80's) but that's normal in the summer, I would think they would have to wear a uniform? Does your mail person have a regular uniform?