This exotic material makes the string more playable while retaining its durability

Low compression bounces 75% lower than standard balls

Easy to use spray bottle

State of the art touch button control panel comes standard with an LCD screen

For use wih injuries to quadriceps

Dunlop Black Widow 17 Ball Type_High Altitude This exotic material makes theInspired by one of the world's deadliest predators, Dunlop Black Widow 17 tennis string is the ultimate weapon for serious players. Premium polyester gives unmatched power and the heptagonal profile bites into the ball to provide exceptional spin generation. High tensile, monofilament premium polyester for extra durability. Heptagonal outer profile for maximum spin generation. Power: 7 Comfort: 7 Spin: 10 Durability: 8