For a laid-back and cool ensemble, try pairing a tan crew-neck t-shirt with navy jeans — these items go really well together. To bring a little depth to this ensemble, complement this outfit with a pair of tobacco leather brogue boots. So if it's a roasting hot hot weather day and you want to look dapper without putting in too much work, this ensemble will do the job in next to no time. This getup illustrates that as a 30-something Millennial guy, you have a wide range of sartorial options.