Opt for a crew-neck t-shirt and white chinos to prove you've got expert styling prowess. Black leather low top sneakers look perfect completing this outfit. Think it's hard for 20-something gentlemen to nail semi-casual outfits? This pairing is undeniable proof of otherwise.
If it's comfort and functionality that you appreciate in menswear, make a crew-neck t-shirt and white chinos your outfit choice. Rounding off with a pair of black leather chelsea boots is a surefire way to infuse a hint of class into this ensemble. Men who wonder how to rock smart outfits as you go through your 20s, you have your answer.