The Callaway HX Diablo Tour Logo Overrun Golf Balls combine all the best elements of the HX Bite and the HX Hot Plus, providing the optimum combination of distance, feel and control in a three-piece performance golf ball. Strategic hardness gradation creates a soft inner portion of the core that gradually gets firmer toward the perimeter, resulting in lower driver spin for increased distance with excellent green-side control. The soft ionomer cover produces incredible feel off the clubface with increased spin for the short game and allows for aggressive shot-making. An advanced DuPont HPF inner cover creates faster ball speeds and helps lower driver spin for longer, more accurate shots. Hex aerodynamics replaces conventional dimples to reduce drag and produce a more penetrating ball flight in various weather conditions.