Look on-trend yet relaxed casual by opting for a navy blazer and navy jeans. To introduce a bit more edginess to your look, add blue athletic shoes to your look. Needless to say, it's easier to work through a hot day in a summery look like this. Wondering how to nail casual style in your 40s? This combo is a wonderful example.
For a casual outfit, pair a navy crew-neck t-shirt with navy jeans — these pieces go really well together. If you want to immediately play down this look with a pair of shoes, why not introduce a pair of blue athletic shoes to your outfit? So if it's a baking hot summer day and you want to look sharp without exerting much effort, this look will do the job in seconds time. This combo shows that in your forties you still have a wide array of sartorial options.