Golf ball has dimples 8. The dimple 8 has a first curved face S1, a second
curved face S2, a third curved face S3, a first edge E1, a second edge E2
and a third edge E3. The second edge E2 and the third edge E3 are
disposed concentrically with the first edge E1. The first curved face S1
is ring-shaped. The first curved face S1 is inclined downward from the
first edge E1 toward the center of the dimple 8. The second curved face
S2 is ring-shaped. The second curved face S2 is inclined upward from the
second edge E2 toward the center of the dimple 8. The third curved face
S3 is bowl-shaped. The third curved face S3 is inclined downward from the
third edge E3 toward the center of the dimple 8. The air that flows
toward the center of the dimple 8 collides with the third edge E3. Due to
this collision, the air flow is disrupted.