| 摘要 |
A golf ball having a large number of dimples on the surface wherein the surface area occupation ratio Y of the dimples is 0.80 to 0.90; the mean occupation ratio y which is a value obtained by dividing the surface area occupation ratio Y by the total number of the dimples, is 0.00220 or more; the total contour length X of the dimples and the surface area occupation ratio Y satisfy the relationship indicated by an expression (I):number of dimples having a contour length x of 10.5 mm or more to the total number of dimples is 91% or more. |
