With added weight, the Aero Storm tennis racquet allows easy control for powerful strokes. Advanced players with fast swings will enjoy the aerodynamic profile, which cuts through air 15% more efficiently than the Pure Storm model. This racquet also benefits from the Aero’s vibration-filtering Cortex technology. Specifications: Headsize: 98 sq. in. Length: 27.00 in. Weight (strung): 11.90 oz. Stiffness (Babolat RDC): 67 Balance: 12.80 in. Head Light Cross Section: 22mm Head/20mm Throat Swingweight: 321 kg*sq. cm String Pattern: 16x19 Grip: Syntec Product Review: “I currently play with the Pure Drive Plus but have just ordered two of these. The added weight feels just right and I simply have far more control with this racquet. Feels great on the arm and swings lighter than the swing-weight. I tried several other racquets and none of them compared to this one.” Darin, Richland, WA