Why not consider teaming a grey crew-neck t-shirt with black chinos? These pieces are totally practical and look awesome worn together. Here's how to dress down this look: black leather flip flops. Think it's hard for gents in their 40s to nail modern off-duty dressing? This combo should prove you otherwise.
A grey crew-neck t-shirt and khaki cargo pants are a great pairing that will easily take you throughout the day and into the night. Complete this outfit with black leather flip flops to make a standard look feel suddenly fresh. Dressing inspiration like this will help you remain enviously fashionable well into your 40s.