Make a beige trenchcoat and khaki chinos your outfit choice to pull together a casually neat and put together outfit. To give this getup a more laid-back feel, why not add a pair of high top sneakers to the equation? When it comes to casual outfit ideas for 20-year-old gents, this getup is ideal.
If the situation calls for a casually classy look, you can easily dress in a beige trenchcoat and black chinos. For something more on the casually cool side to finish off this look, complete your outfit with high top sneakers. No doubt, a great option if we're talking dressing ideas for 20-year-old gentlemen.