- Cross Section: 23 mm Flat Beam
- Head Size:98 sq. in.
- String Pattern:18x20
- Unstrung weight : 304g
- Unstrung Balance:32.5CM/6 Pts HL
Co-designed by Roger Federer, the Pro Staff delivers the pure, classic feel players have come to love but with an all-new uncontaminated design. Meticulous in detail and bold in its beauty, the new Pro Staff introduces a whole new dimension of engineered paint finishes and textures with matte black velvet, chrome touches, and laser engraving never before seen in tennis.