If you're on a mission for a casual yet seriously stylish ensemble, marry a turtleneck with beige chinos. On the fence about how to round off? Introduce tan athletic shoes to the equation to shake things up. This is a safe option for a neat getup that will take you from winter to spring. As you pass the big 3-0, you want to start dressing like a grown-up. In this case, ensembles like this are a life saver.