If you're in search of an off-duty and at the same time sharp getup, consider wearing a charcoal check wool blazer and beige jeans. If you wish to immediately dial down your ensemble with shoes, complement your getup with a pair of light blue athletic shoes. So so as you can see, it's a kick-ass, not to mention spring-appropriate, getup to have in your transitional rotation. This pairing should clear any doubts you had about wearing casual clothes in your forties.