An olive crew-neck t-shirt and blue jeans are both versatile menswear essentials that will integrate nicely within your off-duty arsenal. A great pair of white canvas low top sneakers pulls this outfit together. As we all know, the trick to getting through the hottest time of year is choosing light and breezy outfits like this one. If you're not sure how to dress as a teenage guy, this getup is a great example.