FINIS Foil Monofin Swim Fin in Yellow, Size XL

Promotes an equal use of up and down kicks for propulsion throughout the entire dolphin kick movement, increasing core and leg strength. Proprietary combination of blade angle and vents for a natural kick cycle with instant forward movement. The large surface area works core and leg muscles more than standard fins. Open heel increases range of motion and the open toe space provides the most comfortable fit. The lightweight, rubber blade allows multiple swimmers to safely swim in the same lane.