A navy barn jacket and beige chinos have become veritable wardrobe styles for most men. If in doubt about what to wear in the footwear department, go with black and white canvas slip-on sneakers. So if you're searching for a look that's sharp but also totally season-appropriate, this one fits the task well. As a man in his 30s, you want to start dressing more professionally. In this case, getups like this are perfect as inspiration.