Tecnifibre TFight ISO 315 Tennis Racquets : Powerful and stable, the Tecnifibre T-Fight ISO 315 unleashes your potential. This tennis racquet's frame geometry incorporates RS SECTION technology, a unique square section with five sides and specific angulations that perfectly blend power and control. IsoFlex technology adds stiffness around the frame, providing more forgiveness on off-center hits and improving stability at impact. For players who want power and stability, the Tecnifibre T-Fight ISO 315 is a top option! Racquet Technology RS Section offers the perfect mix of square and elliptical sections to optimize power for hitting winners, increase control and stability at impact, and provide arm-friendly comfort. IsoFlex technology adds rigidity around the frame to increase comfort and stability at impact. The sweet spot allows more forgiveness on off-center hits and provides maximum power when hitting the intersection of the longest strings. 98 in2 head size for greater stability and precision. 16x19 string pattern enhances spin. 315g weight offers maximum power.