This relaxed casual combination of a dark green military jacket and a white crew-neck t-shirt can go in different directions according to the way you style it. Grey suede low top sneakers are a nice pick to round off your ensemble. Casual outfits for 20-year-old gentlemen aren't actually that hard, as you see here.
White Crew-neck T-shirt with Dark Green Military Jacket Relaxed Outfits For Men In Their 20s
If you don't like being too serious with your combos, go for a dark green military jacket and a white crew-neck t-shirt. Beige canvas low top sneakers complete this ensemble quite nicely. Great for a man in his 20s if you want to present a fun spirit.