Help improve technique and increase muscle tone. The Biofuse Power Paddle provides water resistance that allows your arms, shoulders and back to work harder, faster and better. Increase muscle tone, endurance, speed and distance per stroke while improving hitting technique with this powerful paddle. It promotes high elbows and correct hand entry into the water for a more efficient stroke technique and to conserve energy, which is important for long distance swimming. Speedo's Biofuse technology ensures maximum comfort and fit.