Thread wound golf ball

摘要

A thread-wound golf ball comprises a thread-wound core (3) and a cover (4), the cover (4) being formed of a vulcanized rubber composition comprising a base rubber comprising at least 30% by weight of transpolyisoprene, and having a vulcanizing sulfur content ratio between radially outer and inner regions thereof of from 1:2 to 4:1. Sufficient vulcanizing sulfur is available throughout the cover (4) to render the cover resistant to cut and shear so that the ball is durable.