Why not opt for a denim shirt and white and navy chinos? As well as super practical, both pieces look cool combined together. Put a smarter spin on your getup by rounding off with a pair of burgundy leather casual boots. So as you can see, this getup is seriously stylish and will provide the necessary warmth for getting through winter with ease. In your thirties, you probably want to start dressing like a grown-up. In this case, looks like this are perfect as inspo.