SWIM FASTER in the pool lanes with the PATENTED Fin Fun Monofin, STRENGTHEN your core with the full-body motion of the “Dolphin Kick”. ENGINEERED Fin Fun Monofin creates a natural mermaid motion with an unbreakable fin. ADVANCED, flexible and strong polypropylene insert is covered by professional-grade neoprene. The SURF-GRADE neoprene cover is double layered at the monofin tips for the most DURABLE cloth-covered monofin. SOFT FOOT POCKETS hold your feet in the monofin for the most COMFORTABLE swim, other monofins can hurt, pinch, or rub the feet.