Air resistance reduction - with a 3% thinner frame and 6% thinner shaft, the resulting 5% reduction in air resistance produces a racket with superior playability. High Speed, High Power - the muscle power frame transfers the full energy of a hit with no loss of power on impact, producing a 5% faster smash. Solid feel on impact - the muscle power frame features 'round archways' between grommets to evenly distribute stress forces. String tension id higher giving a more solid feel and greater stability with every hit.
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