This combination of a black sweatshirt and a white and black horizontal striped crew-neck t-shirt is hard proof that a pared down off-duty ensemble can still look really interesting. Let your outfit coordination prowess really shine by complementing your ensemble with a pair of navy low top sneakers. When leaves change color and fall is in full swing, you'll love this ensemble as your favorite for summer-to-fall weather. This ensemble illustrates that turning 30 is no reason to avoid casual clothing.