The present invention is directed to golf items formed from a sulfur-containing composition. The sulfur-containing composition comprises the reaction product of four reactable components: (a) polyisocyanates and polyisothiocyanates; (b) polyols and polythiols; (c) epoxides and episulfides; and (d) amines and anilines; wherein at least one of the four reactable components contains a sulfur atom. The present invention also relates to methods, e.g., reaction injection molding processes and castable molding processes, for forming such golf items.