If you gravitate towards street style style, why not wear a navy crew-neck t-shirt and black ripped jeans? Want to go all out with shoes? Introduce black and white check leather low top sneakers to this look. So if it's a super hot summertime day and you want to look on-trend without putting in too much work, this look will do the job in no time. All in all, a perfect demonstration of off-duty fashion for 30-something gentlemen.