This combination of a light blue plaid overcoat and a beige turtleneck comes to rescue when you need to look effortlessly sleek in a flash. Our favorite of a ton of ways to round off this outfit is white canvas low top sneakers. So as you can see here, it's a neat, not to mention spring-appropriate, look to keep in your seasonal rotation. As a 30-year-old gentleman, you want to start dressing like a grown-up. If that's the case, combos like this prove useful as a source of inspiration.