There are 2 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 tennisstring Topspin Cyber Black is a tennisstring (SoP System) made of the latest state-of-the-art PETP. The tennisstring captivates with its super feedback at slow speed and the perfect control at fast strokes. In addition, the tennisstring is elastic, offers its tennis player good spin characteristics and effectively prevents slipping of the strings.
