For something more on the casual side, try this combination of a grey polo neck sweater and blue ripped skinny jeans. If you're hesitant about how to finish off, a pair of white low top sneakers is a great option. So as you can see here, it's a sharp, not to mention season-appropriate, combination to keep in your seasonal closet. This combination shows that approaching your 30s is no reason to stop dressing casually.