Head MicroGEL Extreme Racquet : MicroGEL is a revolutionary silicone-based material with the lowest density of any solid known on the planet. This incredible "super material" weighs only about 3g per cubic centimeter, but is able to support up to 4,000 times its own weight. Head has combined MicroGEL with stiff and strong carbon composite fibers to create a racquet with incredible responsive qualities. On ball impact, Head MicroGEL uniformly distributes the impact load around the frame to provide a rock-solid feel and unique touch that have to be experienced to be believed. Head's new Extreme racquets have an increased head width, allowing the ball to slide further across the stringbed for unmatched spin generation and maximum stability. The Extreme's perfect combination of weight and balance make it very quick through the air. Head Extreme racquets have been especially designed for aggressive, competitive players with a long swing style. These completely new state-of-the-art tour racq