This pairing of a dark green plaid long sleeve shirt and beige chinos is extremely easy to do and so comfortable to rock a version of over the course of the day as well! Level up your ensemble with the help of a pair of burgundy leather oxford shoes. Keep this look in your front hall wardrobe come warmer weather, and rest assured, you'll save a lot of time crafting an ensemble on more than one occasion. As a 30-year-old gentleman, you probably want to start dressing like a grown-up. In this case, outfits like this are ideal as inspiration.