New Wilson 2017 Blade 104 Square Inch Tennis Racquet 4 3 8" Unstrung Black Green 4 3 8 inch:Black Green Rib and Spine Padding Breathable Ryl Silver Rib and Spine Padding Breathable padding system compression fit bolsters muscle support China Patented S1ID Barrel Technology: Provides Ultimate Performance On The First Swing The all new and highly versatile Wilson Ultra 103S offers players effortless power with smooth comfort thanks to its large headsize and open string pattern The 103 square inch head size results in a large size sweet spot with ample power and feel Wilsons Parallel Drilling process increases the power and also yields an increase in feel and comfort on the string bed BLX is being replaced with High Performance Carbon Fiber in a new unique frame construction with the outer profile of the frame being rounded and the inner profile being a triangular shape to give the racquet better aerodynamic properties The frames weight of 107oz strung and extended length of 2725 gives it enough mass to hit heavy deep shots as well as remain stable when absorbing the pace from big hitters The slightly head light balance of the frame ensures solid maneuverability when venturing to the net for volleys The Spin Effect Technology string pattern of 16x15 is what sets this model of Ultra apart By reducing the number of cross strings the main strings are allowed to move more freely resulting in a dramatic spin increase for heavy powerful shots The Amplifeel 360 handle system is also replaced with CushionFoam which softens impact for optimal dampening and shock absorption