The Wilson XP1 110 is one of the most powerful frames on the market, period. A fine-tuned and improved XP Power Profile layup has generated the capacity for ultimate responsiveness and pace from anywhere on the court in a lightweight, graphite frame. The Carbon Fibers infused within this pre-strung racket also increase the frame's stiffness, which in turn produces relentless power. Paired with a 16x18 string pattern and a longer handle length, expect to keep hitting comfortable winners wherever you are on the court. High Performance Carbon Fiber PowerProfile Frame Geometry Amplifeel 360 Swing Speed: Slow -Moderate Swing Type: Compact - Medium Power Level: High Head: 110" sq inch String Pattern: 16 x 18 Even Balance Recommended Tension: 50 - 60 lbs Length: 27.5" inch Stiffness: 73 Swing Weight: 321 Strung Balance: 13.8" inch (35 cm) Strung Weight: 9.8 oz (280 g) Taper System: 27 / 30 / 27 Dual Taper Unstrung Weight: 9.2 oz (265 g) Wilson Sublime Grip (Black) Recommended String: NXT/NXT Power/Sensation Composition: Graphite/High Performance Carbon Fiber