The Wilson Triniti Tennis Ball is a revolutionary tennis ball designed with fully recyclable packaging, ushering in a new era for tennis balls and pushing the limits of sustainable performance. The ball core integrates a unique plastomer material that impressively extends fresh ball feel, while STR Felt provides enhanced durability and is 50pct more flexible than the standard ball for better feel at contact. This blend of new core material and flexible felt allows this ball to maintain enough liveliness to exist outside of a pressurized can. Sold per dozen.