A charcoal turtleneck and dark brown jeans are a great combination to add to your current casual routine. Add a pair of brown leather chelsea boots to your outfit for a major style boost. This ensemble is a good pick when it comes to piecing together a neat outfit for awkward transition weather. As you're maturing from your 20s to your 30s, you probably want to start dressing more professionally. That's when inspiration like this proves very useful.