For a cool and relaxed outfit, dress in a navy denim jacket and a grey long sleeve t-shirt — these two items play really nice together. Make this outfit slightly more refined by rounding off with dark brown suede desert boots. So if you're on the lookout for an ensemble that's seriously stylish but also feels totally spring-friendly, this just might be it. This pairing shows that as a 30-something man, you have a wide array of style options.