A black and white check overcoat and khaki dress pants are absolute wardrobe heroes if you're figuring out a classic closet that holds to the highest men's style standards. White leather slip-on sneakers will add a mellow vibe to an otherwise classic look. This combination is a pretty great pick, especially for fall, when the temperatures are getting lower. So if you're looking for a stylish yet mature getup for a guy in his twenties, this one fits the bill.