This is undeniable proof that a blazer and a white and black crew-neck sweater are amazing when matched together. Add a pair of black suede chelsea boots to the equation to completely switch up the getup. If you're over 30, take cues from outfits like this to add more maturity to your style.
White and Black Crew-neck Sweater with Blazer Cold Weather Outfits For Men In Their 30s
If the dress code calls for a casually classic ensemble, pair a blazer with a white and black crew-neck sweater. In your 30s, you probably want to start dressing like an adult. That's when looks like this come in very handy.