A red crew-neck t-shirt and chinos are the kind of casual essentials that you can wear for years to come. Complete your outfit with brown leather loafers to immediately step up the wow factor of your ensemble. As you can imagine, this is a kick-ass pick come warmer days. As you're moving through your late 20s, you want to start dressing more like a mature gentleman. That's when getups like this come in handy.