SD Tour The Spalding SD Tour 3-piece urethane golf balls is designed for accuracy, high speed, long distance, and control. It will deliver top-quality initial velocity with backspin control off the drive. A high-intensity core provides long distance performance in the irons. Tour-level TPU cover employs special technology to supply consistent performance and lofty backspin off wedges. Features: TPU Urethane Cover 3-Piece Tour Construction 344 Dimple Pattern Consistent Accurate Distance Low Spin