For a classic and casual menswear style, choose a navy overcoat and a navy v-neck sweater — these pieces play nicely together. For times when this getup looks all-too-dressy, dial it down with dark brown leather casual boots. When temps are dropping and autumn is setting in, you'll love this ensemble as your go-to for unpredictable fall weather. And if we're talking casual fashion for 30-something Millennial gentlemen, this look looks cool on almost any gentleman.