There are 2 products.
Active filters
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.
New heptagonal shaped string developed for the higher-performance player. Allows a player to generate maximum power and greater ball bite for massive amounts of spin. Co-poly material is very responsive and provides lots of feedback. Excellent tension maintenance.
