| abstract |
To provide a golf ball 2 excellent in flight performance and control performance in a shot with a fairway wood. A golf ball includes a core, an inner cover, and an outer cover. The core 4 has a center 10, an inner envelope layer 12, and an outer envelope layer 14. The inner envelope layer 12 is formed by crosslinking a rubber composition. This rubber composition contains a base rubber (a), a co-crosslinking agent (b), a crosslinking initiator (c) and an acid and / or salt (d). The co-crosslinking agent (b) (B1) an α, β-unsaturated carboxylic acid having 3 to 8 carbon atoms or (b2) a metal salt of an α, β-unsaturated carboxylic acid having 3 to 8 carbon atoms. [Selection] Figure 1 |