Tecnifibre X-One Biphase - String Reel age-8-and-under Roller is 5/8” thick polyvinylaldahyde

Roller is 5/8” thick polyvinylaldahyde seamless foam with PVC core

Includes 1/2” Fiberglass dowels

Midsole: ABZORB midsole offers tons of cushioning and support

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

It is the softest

Tecnifibre X-One Biphase - String Reel age-8-and-under Roller is 5/8” thick polyvinylaldahydeAccording 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