Learn and strengthen your dolphin kick with the Foil Monofin from FINIS, which teaches the Foil Bod Motion developed and made popular by Coach Bob Gillett. Using the Foil Body Motion a swimmer can use his or her entire body to create a powerful and undulating dolphin kick through the water. The Foil Monofin promotes an equal use of “down” and “up” kicks for propulsion throughout the entire dolphin kick movement by teaching the Foil technique and increasing the swimmer's core and leg strength. For best results while learning the Foil Body Motion, try kicking on your side while using the Foil Monofin. The natural rubber construction of this monofin swimming flipper provides a secure and comfortable fit. The Foil Monofin teaches the Foil Body Motion developed and made popular by Coach Bob Gillett. The Foil Body Motion utilizes the entire body to create a powerful and undulating dolphin kick through the water. The Foil Monofin promotes an equal use of up and down kicks for propulsion throughout the entire dolphin kick movement, increasing core and leg strength. Natural rubber provides a secure and comfortable fit.