Standard Number Are One Sleeve of Each of the Following Number in a Dozen Box: 1, 2, 3 & 4. the Number One Ball on Worldwide Tours Giving Total Performance for Every Player with a Very Soft Feel for More Short Game Control & Longer Distance & a More Consistent Flight. the Difference Between the Pro V1 & Pro V1x: the Pro V1 has a Softer Feel, Less Iron Spin, & a More Penetrating Ball Flight. Comparatively, the Pro V1x Should Launch Higher, Feel a Little Less Soft, & Offer More Iron Spin. All Golf Ball Are Packed into Three Ball Card Sleeves. Minimum Quantity: 12