This combo of a black bomber jacket and a crew-neck t-shirt looks awesome and instantly makes any gentleman look cool. Add a pair of brown leather sandals to the mix to add a dose of stylish effortlessness to this outfit. There are a multitude of ways to look neat and survive the heatwave, and that's one of them. This pairing shows that maturing from your 20s to your 30s is no reason to avoid casual clothing.