Biofuse technology is designed to work with your body to deliver a more comfortable fit, working like a natural extension of your body. The Speedo Biofuse Swim Training Fins feature a dual density design with a soft footbed combining with a stiff blade for better comfort and power. The fins assist in training by strengthening lower leg muscles with greater water resistance and enhancing foot flexibility.
- Biofuse technology delivers superior fit and comfort
- Dual-density design features a soft footbed and hard blades
- Increases leg strength and ankle flexibility
- Increases speed through the water