A brown trenchcoat and beige jeans paired together are a perfect match. Introduce work boots to the equation to instantly step up the fashion factor of this outfit. Guys wondering how to rock modern casual dressing in your mid-20s, you have your answer.
Go for a straightforward but casually cool option in a beige fair isle crew-neck sweater and beige jeans. To add a more casual spin to your look, introduce a pair of work boots to the equation. And if we're talking casual clothing for 20-year-old men, this look is ideal.