We are not exaggerating when we say the TOUCH is the absolute best multi-filament string on the market today! We've had so may testimonies from coaches on their players that their elbow problems are gone and they finally found a multi which is durable enough to switch to from playing with polyester. Comparable with Sensation but better feel and more durable. Highly responsive string for added touch, control, and power. Racquets will benefit from its resistance to string movement. Nylon 66 multifilament central core surrounded with a fine row of monofilaments.