A couplea months ago, before the world went into shutdown, we put FCS' new H4 fins to the test under the feet of seasoned journo Nick Carroll. The results were overwhelmingly positive as Nick put them through the works at a reef, beachie and sand point. Now, FCS have dropped an inside look into what makes the world's first smart (and sexiest) fins pop. If you don't know, the H series is FCS' innovation platform, exploring how best to make your fins go good. This is an in depth, behind the tech breakdown and a must watch if you're interested in the nuance of fin template. More info, go HERE.