An olive long sleeve shirt and navy jeans are essential in any modern gent's functional casual collection. Our favorite of an endless number of ways to finish off this outfit is a pair of athletic shoes. Keep this look ready to go when warmer days are here, and we promise you'll save a ton of time racking your brain for what to wear on more than one morning. This outfit is a practical illustration 40-something gentlemen can very well kill in the style department.