The Atom Pro Fitness skate is made for Fitness, Marathon or Speed. The shell is carbon fiber which normally comes at a higher price. Not with the Atom Pro Fitness skate. The cuff is hinged which allows for good range of motion for forward flexing of the leg. The high cuff also gives you comfort and support not seen in a lower cuff boot. The Atom Pro Fitness Skate is a great option whether your looking to skate fitness or race. If you have any questions give us a call at 1-800-668-5280.