Speedo The Biofuse Finger Paddle allows you to focus on and improve hand positioning in the pool, including catch position and arm pull. By allowing the surface area of the palm to stay exposed, it offers a greater feel of the water whilst placing less strain on the shoulders. Improve upper body strength with the Biofuse Finger Paddle as it creates maximum resistance in the water and more resistance means more power, more body strength and a higher intensity workout.