Players can maximize the power of every swing with the Boris Becker Delta Core 1. The 115 square inch headsize provides easy access to both pace and depth on groundstrokes. This racquet offers superb feel, comfort and stability in a light weight package. Boris Becker's new technologies, Double Rail Technology and the eponymous Delta Core, help the Delta Core 1 play like a heavier racquet (better stability and comfort). The DRT system strengthens the racquet with two braces at 3 and 9 o'clock positions of the racquet head. The added rail helps the racquet resist twisting, resulting in a more solid feel even on mis-hits. Delta Core also helps create an arm-friendly hit. Delta Core technology features carbon nanotubes placed in a triangular shape, for a stronger frame, and according to Boris Becker Tennis, helps absorb more vibration. This Delta Core 1 is a must-try for beginning players who want nice feel from the stringbed and a lot of pop with little effort.