You'll be amazed at how easy it is to put together this classy outfit. Just a navy pea coat and grey dress pants. Balance out this ensemble with more casual shoes, such as this pair of brogues. When temps are falling and fall is setting in, you'll love this outfit as your go-to for weird fall weather. So if you're looking for a nice yet age-appropriate ensemble for a guy in his twenties, this one fits the task well.