Featuring a new construction designed specifically for long-lasting, consistent performance, THE Wilson Triniti Tennis Balls (Box of 18 Tubes / 72 Balls) are one of the innovations of the year. The Triniti’s Engage Core provides a resilient wall around the inside of the ball, resisting deformation over time while maintaining reliable flight from point to point. On the outside, STR Felt gives the core greater elasticity, combining with an increased wool content to improve responsiveness. Simply hitting the ball has never been so much fun. Because of their consistent performance over time, the other major benefit of the Triniti design is that you get very little variation between individual balls, so you can happily swap out one for another and be confident that it’s ready for play. The eye-catching packaging of the Triniti collection was created in conjunction with sustainability specialists BillerudKorsnas and made with renewable materials. It’s intentionally minimalist, is easy to open, and fits neatly in the hand and in your bag.