A beige crew-neck sweater and charcoal wool chinos are wonderful menswear must-haves that will integrate brilliantly within your daily casual collection. Take the classic route when it comes to footwear by rocking brown leather casual boots. We recommend this one if you're looking for an ultra-warm getup that's as stylish as it is comfortable. As a 30-something, you want to start dressing more professionally. If that's the case, getups like this are a foolproof option.