This is the world's best US open tennis ball that is also used for high-fidelity interhigh (male and female)
Recommended Surface: Hard Coat, All Coat
Quantity: 1 can (2 bulbs)
Certified: National Tennis Association (USTA), International Tennis Federation (ITF), and Japan Tennis Association (JTA)
Nationwide High (Unisex), Selected Competitions (Unisex)