To look like a modern gentleman, opt for a grey suit and a tan pea coat. When this getup appears all-too-fancy, dial it down by rocking a pair of desert boots. During the colder months, when practicality is everything, it can be easy to settle for a less-than-stylish ensemble. However, this ensemble is a shining example that you totally can stay snug and remain stylish at the same time in the colder months. Wear this pairing to create a more mature look as a gentleman in his 30s.