A golf ball (10) comprises a molded core (12), one or more ionomer mantles (14, 16), and a thermoset polyurethane cover (18). The core (12) is a high cis-polybutadiene crosslinked with zinc diacrylate and may also comprise a halogenated thiophenol and metal thiosulfate. One or more of the ionomer mantles (14, 16) comprises an ionomer neutralized to 80% or greater.
