For a look that's absolutely gasp-worthy, make a grey pea coat and grey plaid dress pants your outfit choice. The whole ensemble comes together brilliantly when you add dark brown leather dress boots to this outfit. As you can see, this outfit is a really great option, especially for transeasonal weather, when the temperature is dropping. As a man in his 30s, you want to start dressing with more sophistication. If that's the case, combos like this are perfect as inspiration.