This racquet comes pre-strung for added savings? The Head IG Challenge MP Blue is ideal for the intermediate player who wants to dominate the court with pace and spin. Fast and explosive, the MP Blue is great for whipping up topspin or charging into the front court and closing out points. To help with comfort, Head adds INNEGRA to the layup an innovative material technology that uses a low-density, high modulus fiber to increase stability and decrease vibration. Ultimately, with its powerful response and spin-friendly precision, the IG Challenge MP Blue is an obvious choice for players looking to attack the ball and play aggressive tennis. The great price makes it hard to beat.