Combining a dark brown crew-neck t-shirt with dark green sports shorts is a great choice for a casual yet on-trend look. Want to go all out with shoes? Complement this outfit with a pair of white leather low top sneakers. This ensemble isn't a hard one to assemble and it's season-appropriate, which is important when it's roasting hot outside. Ideal if you're looking for some incredibly inspiring relaxed style for gents over 30.