To don a casual getup with a modern take, you can rock a black and white crew-neck t-shirt and chinos. If you want to instantly dress down this ensemble with one piece, why not introduce olive canvas sandals to the mix? Casual looks for middle-aged men aren't actually that hard, as you can see.
Black and White Crew-neck T-shirt with Chinos Relaxed Outfits After 40
To achieve an off-duty ensemble with a fashionable spin, wear a black and white crew-neck t-shirt with chinos. A pair of white athletic shoes immediately kicks up the fashion factor of your look. All in all, a good demonstration of off-duty fashion for gents in their forties.