Experience the world like a fish in the sea with the Finish Adult Foil Monofin. Fusing your feet together to create a single yet ample fin this swimming accessory gives you a first-hand experience of being a mermaid (or merman). But, in addition to this bucket list feeling, the Monofin actually gives you a killer workout by targeting your core and leg muscles more than any other fin designs. Known as the Foil Body Motion, the dolphin-like movement propels you through the water. Coming in five different sizes to suit feet of every variety, the Monofin’s all-rubber design is comfortable for all ages and abilities yet is durable enough for the open seas. Trusted by professional swimmers, the Monofin is the best way to use your entire body during your swim and make every workout count.