This is irrefutable proof that a tan trenchcoat and charcoal wool dress pants look awesome when you team them together in a refined look for a modern gentleman. A trendy pair of dark brown leather derby shoes is an easy way to infuse a hint of stylish nonchalance into this look. We love that this outfit is great come warmer days. As a man in his 30s, you probably want to start dressing more maturely. If that's the case, outfits like this prove useful as a source of inspiration.