Biofuse Finger Paddles enable you to improve the catch and pull phase of your stroke. Biofuse Finger Paddles allow the surface area of the palm to stay exposed, which allows for more feel of the water and places less strain on the shoulders. Stroke techniqueFinger paddles allow you to focus on hand positioning in the water, improving catch position and arm pull. Upper body strength - Finger paddles increase resistance in the water which raises the intensity of your workout and improves upper body strength and power.