For the style that looks as chill as it can get, team a charcoal crew-neck t-shirt with charcoal shorts. When it comes to footwear, complete your look with white canvas low top sneakers. You know when it's blazing hot outside, sometimes only a proper outfit like this one can get you through the day. As you can see here, as a 30-something Millennial man, you have a wide range of dressing options.