Head Youtek Three Star (Black) The Head Youtek Three Star is part of the new game improvement Youtek Star Series and uses new Head technologies such as d3o and QuadFace in lightweight, user-friendly package. At 115 sq. inches, it provides a generous sweetspot and adds up to the largest and one of the most powerful racquets in the Youtek line. This racquet offers a lively feel and the ball leaves the stringbed with plenty of speed from only a moderate swing. Best suited for players with shorter, compact strokes looking for power. Recommended for the 1.5-2.5 NTRP level players. YouTek: YouTek combines superior technologies to perfectly match your individual needs. Whether your game is aggressive and adventurous or consistent and smooth, YouTek™ enhances your performance and brings out the best in you. d3o: The frame-inlay d3o™ is a smart material. The specially designed molecules in d3o™ react on different impacts within nano seconds. They stay soft during slow hits and lock together on hard strokes. With this behavior, d3o™ is able to sense the needs of your play and adapts to you. It provides maximum power as well as softer touch for a better feel.