One of the best ways to style such a timeless menswear item as a camel overcoat is to marry it with a waistcoat. Infuse a hint of stylish casualness into this look with a pair of white leather low top sneakers. There's no better way to cheer up a dreary fall day than an on-trend outfit like this one. Certainly a winning choice when it comes to outfit ideas for 40-year-old gentlemen.