The D1 golf balls’ two-layer Ionomer construction delivers distance and great feel for players with sub 90 mph clubhead speed. 2-piece construction368 dimple pattern for added carryVibrant high-visibility neon cover The D1 golf balls’ two-layer Ionomer construction delivers distance and great feel for players with sub 90 mph clubhead speed.2-piece construction368 dimple pattern for added carryVibrant high-visibility neon coverIncludes 3 balls in each color