What is Retro style? You might be confused with this term to vintage and antique.

It is a style that is consciously derivative or imitative of trends, modes, fashions, or attitudes of the recent past. It generally implies a vintage of at least fifteen or twenty years. For example, clothing from the 1980s or 1990s could be retro.  Retro style is an outdated style or fashion that has become fashionable again.  The word “retro” derives from the Latin prefix retro, meaning “backwards, or in past times” 

Retro items don’t have to be old, they can be brand new, but would have to be made in the style of the time or item they are trying to replicate. That being said, Retro products can be trendy, just with a little "old spice" to it. It gives the younger generation to experience products that are generally not available anymore or very difficult to obtain.