The srixon z star pearl grade lake balls offer exceptional value for money as they have only seen very limited use before being lostall the lake balls are chemically cleaned and repackaged at a fraction of the cost of a new pack playability and performance will not be affected at all so these are a great option if you are looking for a cheaper alternative to a new ball or you already play this ball but want the same ball to practice withthe new z star combines next generation spinskin and sp