A white dress shirt and grey vertical striped dress pants are absolute staples if you're figuring out a classy closet that matches up to the highest menswear standards. A pair of brown leather derby shoes can integrate perfectly within many getups. So as you can see, it's very easy to look seriously stylish and stay cozy come colder weather, thanks to this look. As you're approaching your 30s, you want to start dressing more like a mature gentleman. That's when inspiration like this comes in handy.