The Cosco Pro Court Treton Serie+ Court Tennis Ball (Code: 11019) is a premium-grade, ITF-approved pressurized tennis ball crafted for high-performance play on all types of court surfaces. Made in Sweden, it features a highly flexible natural rubber core that ensures consistent bounce and long-lasting durability. The outer layer is covered with extra-strong felt containing 45% wool, providing excellent grip, enhanced feel, and control during fast-paced rallies. Each ball weighs approximately 56 grams and complies with international standards, making it ideal for both practice and competitive matches. Packed in a convenient set of three, these balls are designed for players who demand reliability, superior playability, and comfort throughout the game.