Marrying a brown suit and a white and brown vertical striped dress shirt is a surefire way to infuse your day-to-day repertoire with some manly refinement. If you're puzzled as to how to finish off, complement your ensemble with dark brown leather tassel loafers. Is there a better idea for a baking hot summer day? This combination illustrates that as a 40-year-old, you have a wide array of style options.