This relaxed casual combination of a navy knit wool turtleneck and navy plaid chinos is super easy to throw together without a second thought, helping you look seriously stylish and prepared for anything without spending too much time rummaging through your wardrobe. Tap into some David Beckham stylishness and spruce up your ensemble with a pair of tobacco leather brogue boots. If you're wondering how you should dress as a 30-year-old guy, this outfit is a good source of inspiration.