Here at R&D, quality matters across all fronts. The construction materials and production systems of our pressurized tennis balls are premium. Each ball is...QC'd, meaning quality control was assured at every stage, from the selection of the raw materials, process flows, control specs, and to the very last output of the production line. The engineers of our sports equipment and our material specialists build, quality and durability, to assist and enhance comfort in play. The tennis balls we produce are exceptional and highly resilient. Every player can benefit from these tennis balls. In fact, we offer the best available in the market.