Why not consider teaming a navy crew-neck t-shirt with charcoal sweatpants? As well as totally practical, both items look good worn together. Finishing off with black and white canvas low top sneakers is a simple way to add some extra classiness to this ensemble. Keep this look ready to go when spring arrives, and we guarantee you'll save a ton of time brainstorming for what to wear on more than one morning. This getup suggests how to kill in casual dressing as a teenage guy.