The Aramith Tournament Pool Ball set is the new generation of billiard balls featuring the Duramith technology. The Duramith resin formulation with it's hi-tech engineered molecular structure, further enhances drastically the longevity of the Aramith ball sets while minimizing significantly table cloth wear. With a lifetime that exceeds up to 8 times of the average polyester and phenol-like resins, reaching easily up to 40 years in residential use.