Play top-level tennis from the first point to the last with the Wilson Triniti 4 Ball Tube. Designed for long-lasting, consistent performance, the Triniti tennis ball features a new construction with an Engage Core for resilience and consistent flight, and STR Felt for improved responsiveness. The packaging is designed in conjunction with sustainability specialists and is made with renewable materials, is easy to open, and fits neatly in hand or bag. The first performance tennis ball designed with 100% recyclable packaging, Triniti pushes the limits of sustainable performance. Featuring a unique octagonal paper container, the Triniti sleeve is fully recyclable after use. The ball core comprises a unique plastomer material that impressively extends ball liveliness, while STR Felt is 50% more flexible than the standard ball for more core compression and longer dwell times. Between a combination of innovative ball technology and unique sustainable packaging, Triniti ushers in a new era for performance tennis balls both on and off the court. The balls are numbered to differentiate from balls used by other players on neighboring courts.