When the situation permits casual styling, consider wearing a charcoal shirt jacket and blue jeans. Let your styling chops truly shine by completing your look with black leather chelsea boots. An ensemble like this can make any 20-something guy look better than any of his peers.
Charcoal Shirt Jacket with Blue Jeans Smart Casual Outfits For Men In Their 20s
For a look that's very easy but can be modified in a variety of different ways, try teaming a charcoal shirt jacket with blue jeans. If you wish to easily dress down this outfit with one piece, why not complete this look with white leather low top sneakers? You can take inspiration from looks like this if you're making it through your mid-20s and you want to take a more serious approach to your style.