A blazer and a white and blue crew-neck t-shirt are totally worth being on your list of menswear staples. Switch up your outfit by wearing a pair of brown leather low top sneakers. During the winter months, when warmth is above all, it can be easy to settle for a less-than-stylish look in the name of convenience. But this look is a bright example that you can actually stay warm and remain stylish in the winter months. A good, less conservative getup for 30-something guys.