The Instinct series contiunes to be the lightweight line in HEADs new Graphene XT line and the Instinct PWR is HEADs lightest frame for 2015 Weighing in at just under 8 ounces unstrung the Instinct PWR will provide slowerswinging players with the best powereffort ratio in the entire Head brand Combine that with a 29mm beam 27 23 length and a jumbo 115 square inch head size and you have effortless power at your fingertips The Instinct PWR was reengineered with the worlds strongest and lightest material to make their Graphene XT racquets 30 stronger providing an optimized weight distribution for a faster swing and more power By using graphene XT in the racquet shaft HEAD has been able to move weight from the shaft to the tip and handle increasing power and stability without changing overall racquet mass more weight in the head provides greater plow through from the baseline and more mass in the handle reduces torque and recoil Slowerswinging players of all levels and particularly seniors will love the smooth power of the Head Graphene PWR Instinct