| CPC A63B 37/14 (2013.01) [A63B 37/0098 (2013.01); A63B 2225/01 (2013.01)] | 20 Claims |

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1. A ball, comprising:
a shell comprising a hollow core, a diameter, a weight, a thickness between an exterior surface and an interior surface exterior surface and a weight:diameter ratio between the weight and the diameter, wherein the weight is between 27 and 52 grams, wherein the diameter is between 2.5 and 3.5 inches and wherein the weight:diameter ratio is between 9.3 and 20.8;
a plurality of apertures within the exterior surface; and
a plurality of dimples on the exterior surface, wherein each dimple comprises a perimeter edge along the exterior surface and a depression recessed a dimple depth from the perimeter edge into the exterior surface, and wherein a group of dimples from the plurality of dimples concentrically surround each of the plurality of apertures.
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