The WaterWay Model 2 Monofin features a 64cm blade / 24.4 inches of width. The WaterWay Model 3 Monofin is designed for young swimmers, ages 11-12, with a soft or medium-stiffness blade. Weighing only 1.3-1.4kg, it allows for effortless movement and improved muscle development. Enhance your child's underwater performance with our top-of-the-line monofin.