The Nike 20XI-S is designed for golfers who want Tour level performance for 90 plus miles per hour swing speeds. Features include a radical new resin core, superior feel, and unmatched consistency. The lighter, low density resin core distributes weight to the perimeter, increasing ball moment of inertia. Higher ball moment of inertia maintains spin after apex, adding yards and minimizing travel off line. is geared toward players who tend to have higher spin. This may contain a mixture of different year models.