A semi-casual combination of a black cable sweater and a dress shirt is appropriate in many different settings. Complement your look with a pair of black leather loafers to switch things up. As you're heading into your 30s, you probably want to start dressing maturely. In this case, getups like this are a safe option.
Black Cable Sweater with Dress Shirt Outfits For Men In Their 20s
As you can see here, looking casually neat doesn't require that much effort. Consider pairing a black cable sweater with a dress shirt and be sure you'll look incredibly stylish. With footwear, go for something on the casual end of the spectrum and finish your outfit with a pair of grey suede low top sneakers. As you're moving from your 20s to your 30s, you probably want to start dressing like an adult. That's when looks like this are a surefire option.