| abstract |
A solid core is covered with one or more covers, and the solid core covers a spherical first layer, a second layer covering the first layer, and the second layer. The third layer has a diameter of 3 to 24 mm, the third layer is formed of a rubber composition mainly composed of polybutadiene rubber, and the solid core is halved. The cross-sectional hardness of the core center in the cross section when cut, the first layer 1 mm inside from the boundary surface between the first layer and the second layer, the second layer 1 mm outside the boundary surface, the second layer and the third layer A multi-piece solid golf ball in which the relationship between the hardness of the second layer 1 mm inside the boundary surface, the third layer 1 mm outside the boundary surface, and the surface of the third layer is specified. [Effect] In particular, the initial hitting speed in the high head speed region is improved, the flight distance can be increased, and a good hitting feeling can be obtained. [Selection figure] None |