James Estrin/The New York Times The factory usually produces 2,500 hats a day, maxing out at around 4,000. Lately, Mr. Cahn said, it’s churning out about 5,000 Harris-Walz hats a day.

We’ve tested running caps, visors, and also warmer run hat options here, so that you can find your preferred style for race day, training sessions, and any other needs, no matter the weather.

Bruins Scally caps and squid hats: Inside the Bruins’ hat-trick trophy collection “We've gotten asked so many times: ‘Hey, what do you do with those hats?’" Dustin Stuck (left) and Joe ...

Why do grown men insist on wearing baseball caps everywhere? They wear them with suits and even to the theater. Does anyone else think this trend has gotten out of control? — Christine, New York ...