A beige cardigan and a grey plaid short sleeve shirt are both versatile menswear essentials that will integrate perfectly within your off-duty styling routine. Amp up the appeal of your getup by rocking a pair of white and red leather low top sneakers. This one is a viable pick if you're piecing together a well-coordinated outfit for awkward transition weather. Guys wondering how to dress well as you head into your 30s, you have your answer.