The pairing of a black crew-neck t-shirt and a navy suit makes this a really well-executed outfit. You can get a bit experimental on the shoe front and dress down your getup by wearing a pair of high top sneakers. This getup is also great if you're looking for summer wear to make a tedious day more bearable. As a man in his thirties, you probably want to start dressing more maturely. That's when ensembles like this are a real lifesaver.