This combo of a navy polo and blue chinos combines comfort and efficiency and helps keep it low-key yet modern. To give your overall ensemble a more sophisticated feel, why not add beige suede loafers to the mix? This ensemble isn't a hard one to pull together and it's summer-appropriate, which is more important when it's extremely hot outside. On the lookout for dressing ideas for gentlemen in their 40s? This combination should definitely go to your inspiration folder.