Tecnifibre X-One Biphase - String Reel age-8-and-under Midsole: ABZORB midsole offers tons

Midsole: ABZORB midsole offers tons of cushioning and support

PolyTour Fire is a string that is designed for big hitters looking for lots of control

the same grip used by Sampras or Federer provides a thin and durable touch for your racquet

Features Wilson script embroidery on the face

formerly known as Babolat Powergy

Tecnifibre X-One Biphase - String Reel age-8-and-under Midsole: ABZORB midsole offers tonsAccording to Tecnifibre, the X One Biphase string uses High Heat Capacity (H2C) fibers, which allows the use of an innovative chemical treatment process called Trimerization. This new process increases the cohesion between chemical molecule links through extreme variations in temperature to result in ultimate dynamic efficiency (power) and exceptional feel. The new patented Biphasic process, with its visible marks on the string, extends string life by