Go for a white print crew-neck t-shirt and aquamarine print sweatpants if you're after an outfit option that conveys city casual style. Hesitant about how to complement your ensemble? Wear orange leather low top sneakers to bump it up a notch. Entirely appropriate for hot weather, you can wear this outfit all season long. This pairing proves that as a 30-year-old guy, you have a vast array of style options.