This combo of a long sleeve shirt and navy chinos makes for the ultimate laid-back style for any man. High top sneakers will add a new dimension to this outfit. This look is probably what you're looking for as a middle-aged man.
Long Sleeve Shirt with High Top Sneakers Smart Casual Warm Weather Outfits For Men After 40
This combo of a long sleeve shirt and khaki chinos is outrageously stylish and yet it looks casual and apt for anything. Give a fresh twist to your outfit by finishing off with a pair of high top sneakers. Ideal to tell people that you're mature enough and confident enough to own your sartorial choices.
For a look that's sophisticated and absolutely wow-worthy, rock a long sleeve shirt with black dress pants. For times when this ensemble is too much, tone it down by finishing with high top sneakers. An outfit like this can make any over-40 gentleman look better than any of his peers.