There are 3 products.
POWER PRINCIPLE is a completely new. High-Copolymer, round, with a snap back as never before. The string has power, control at its best, supported by elastic additives.
The newest, most interesting innovation of the last years! Minimum tension loss (no string moving).
High durability and high dynamic. Excellent ball control.
Product features & key data: Optimum ball control Very good feedback Comfortable soft Arm-friendly string
Further information:
The Topspin Cyber Blue has been awarded both as "Newcomer of the year 2007" (Stringforum. net) and as String of the Year 2007 (Saitenforum.de).
