NWT Wilson OS Max Adult Tennis Racket Highlighted by a massive oversize head to maximize the sweet spot, the OS Max leaves no shortage of power or forgiveness for recreational tennis players. Featuring the largest head size in Wilson's racket line, this frame boasts longer main strings for more responsiveness and power on every shot. Additional features include a lightweight bumper guard to help protect the frame, Stop Shock Pads to reduce racket vibrations, and extra length to cover more court. Wilson OS Max Tennis Racket, 4 3/8 In.: Volcanic Frame Technology yields more power and stability AirLite bumper guard supplies lightweight protection Power Strings feature longer main strings for greater power Stop Shock Pads reduce racket vibrations for improved feel Super oversized head maximizes sweet spot for excellent power and forgiveness Extra length provides extended reach and court coverage Pre-strung Tennis Racket Grip Size 3: 4 3/8" Head Size: 121 sq. in Strung Weight: 10.8 oz Length: 27.5" String Pattern: 16x21