Wilson Staff Triad Golf Ball - 12 Balls, Yellow HIGH MOI DESIGN: Triad’s high MOI design moves weight from the core to the outer layers of the golf ball resulting in faster ball speed and lower driver spin for a more stable ball flight and more fairways hit. ULTRA-THIN CAST URETHANE COVER: The ultra-thin cast urethane cover engages longer with the clubface on mid-to-low irons, generating controlled ball flight and greater spin to attack pins with confidence. PATENTED TRI-BALANCED CONSTRUCTION: Triad’s patented Tri-Balanced construction moved weight from the core to the other layers so that each layer has the same material density. This negates any defects from manufacturing tolerances, making Triad effectively perform like a one-piece ball for pinpoint accuracy and putts that roll true.