Q-STAR ULTISPEED is a totally new Srixon golf ball that delivers blistering ball speeds and extreme distance on every swing. By combining a completely redesigned FastLayer Core with our aerodynamic-boosting 338 Speed Dimple Pattern, a soft, thin cover, and a premium mid layer, ULTISPEED outperforms virtually every expectation of a distance-focused golf ball FastLayer Core ULTISPEED's FastLayer Core was meticulously developed over the past decade using new materials. This model minimizes the differences in hardness typically found in cores of other distance ball offerings, but still uses our signature soft-to-firm approach. With a more subtle soft-to-firm transition, FastLayer enhances speed off the clubface to give ULTISPEED extreme distance on every swing 338 Speed Dimple Pattern The 338 Speed Dimples on ULTISPEED improve overall aerodynamics for better flight performance. A lower drag coefficient helps the ball cut through the air with less resistance for a more penetrating launch and straighter flight. A higher lift coefficient allows the ball to stay airborne longer for maximum distance Soft Thin Cover Every ULTISPEED golf ball features a uniquely formulated cover that's thin and soft to provide more short Iron and greenside spin with a softer feel on pitches, chips, and putts, while still maintaining the high-speed benefits of a distance ball