Maxfli U/6 Golf Balls (1 Dozen) Tour-proven soft feel and optimized spin for longer distance Highest MOI (moment of inertia) for maximum forgiveness Premium 6-Piece straight flight urethane construction Seamless dimple patten for consistency. Optimized launch and spin for penetrating driver flight. Dupont inner mantle layers reduce side spin for straighter flight. Ionomer casing outer mantle layers provide additional MOI for forgiveness and control.