Billie Jean King's Eye Coach is a complete sweet spot tennis training system for all ages and skill levels

Durability 9 out of 10

if you're practicing extra-margin shots above the net

Teaches you to place the throw in the appropriate location for a specific type of serve

With the Element Rough you get the original feel and comfort of the Element string but with extra grip due to the rougher texture

Topspin Cyber Soft 1,25mm 12m strängset dataväska Billie Jean King's Eye CoachCyber Soft brings out the soft side of all hard hitters! This string is the best choice for sentimental all round players who, with smart play, are happy to disrupt the opponent with a slice or stop ball. Highlights: Excellent control characteristics Long durability Sustained tension Gentle on the arm Made in Germany Specifications: Material: PETP Co Polyester Polyurethane Color: turquoise Thickness: 1,25mm. Available in several thicknesses here