A black crew-neck t-shirt and black jeans are a good look to add to your day-to-day casual arsenal. For something more on the sophisticated end to round off your outfit, complete this ensemble with grey leather chelsea boots. The ease and practicality of this combination takes care of the heat and helps you make a fashion statement wherever you go. So if you're after a good-looking and age-appropriate combination for a 20-something gent, this is it.