A golf ball including a core and at least one layer formed over the core. The layer can be an outer core layer, an intermediate layer including inner cover layers, or a cover. Either the core or any layer over the core can comprise a fully or partially neutralized polyester ionomer. The core comprises: a diameter of at least 1.30 inches, a compression of 50 or less; and a coefficient of restitution of 0.80 or greater at 125 ft/sec.