Combining a navy and white shawl cardigan and a long sleeve shirt is a fail-safe way to infuse your styling routine with some effortless elegance. For extra fashion points, add brown suede oxford shoes to the equation. So as you can see, it's super easy to look amazing and stay comfortable come cooler days, all thanks to combinations like this one. A practical example for any man who's still figuring out how to dress maturely as a 30-year-old.