Yonex Ezone Ai 100 Tennis Racquet Color: black/Lime; head size: 100Sq.In; weight: 300g/10.6oz length: 27in; material: H.M. Graphite B; nanometric; quake shut gel; stringing pattern: 16/19 For all-round players who require both comfort and maximum ball speed Evolved isometric technology provides maximum sweet spot with an improved grommet System, applying both deep and shallow grooves inside the frame Off-center hits the ezone ai delivers ultimate swing speed and maximum power even on off-center hits Nanometric material is used in the center and bottom of the frame. This trans-weight System gives quicker maneuverability