The collection of any gentleman should always include such must-haves as a brown overcoat and grey vertical striped dress pants. Tone down the dressiness of this outfit by finishing off with white leather low top sneakers. Keep this outfit in your front hall closet come warmer days, and we guarantee you'll save a lot of time planning an outfit on more than one occasion. Think it's hard for gentlemen in their 20s to nail semi-casual looks? This combination will prove you wrong.