Marry a navy denim jacket with khaki chinos for a neat ensemble. Casual boots are a simple way to give an added dose of elegance to this getup. This one is an obvious pick when it comes to a cool summer-to-fall outfit. Certainly a popular option if we're talking style tips for 40-year-old men.
For an ensemble that's worthy of a modern style-conscious man and casually sleek, pair a navy blazer with khaki chinos. The whole look comes together wonderfully if you complete your look with a pair of casual boots. When you're having one of those gloomy autumn days, sometimes only a knockout outfit like this one can get you out the door in the morning. This outfit is the perfect answer to the question of what to wear as you move into your 40s.