Callaway ERC TT combines spin, control, feel and distance in an optimal way. The ball’s three different layers are adapted to give you distance from the tee and a soft feel at impact. TT stands for Triple Track, which is three sightlines on the ball that help you aim straight more easily. The aerodynamic HEX dimple system gives a strong ball flight in any weather. The unique cover is paired with an all-new HyperElastic SoftFast core that increases ball speed while maintaining a soft feel. The cover is also equipped with an innovative Grip Urethane Coating System that gives better grip on the ball and leads to more spin on short shots.