GOLF BALLS CONSIST OF A CORE, in some cases layering, and always a cover with dimples.
Often made of rubber, the core determines compression rating, which is expressed as a number such as 74, 88, or 105. (A denser core has higher compression.) The higher the number, the more force that’s required to compress (squash) the golf ball at impact. As a result, high-compression golf balls are normally used by golfers with faster swing speeds. Lower-compression golf balls are preferable for golfers with slower swing speeds, making it easier to compress the ball and generate more distance.