Golf ball

A golf ball comprising a core and at least one layer of cover covering the core, wherein the outmost layer of the cover is formed from a base resin mainly containing the mixture of

• (i) ethylene-(meth)acrylic acid-acrylic ester terpolymer ionomer resin obtained by neutralizing with magnesium ion,
• (ii) ethylene-(meth)acrylic acid-acrylic ester terpolymer ionomer resin obtained by neutralizing with sodium ion and/or ethylene-(meth)acrylic acid-acrylic ester terpolymer ionomer resin obtained by neutralizing with zinc ion, and
• (iii) ethylene-(meth)acrylic acid copolymer ionomer resin obtained by neutralizing with magnesium ion, and the outmost layer of the cover has a Shore D hardness of 47 to 58, and
• wherein a weight ratio of the total (i+ii) of the ionomer resins (i) and (ii) to the ionomer resin (iii) is within the range of 20/80 to 80/20.

A golf ball comprising a core and at least one layer of cover covering the core, wherein the outmost layer of the cover is formed from a base resin mainly containing the mixture of

• (i) ethylene-(meth)acrylic acid-acrylic ester terpolymer ionomer resin obtained by neutralizing with magnesium ion,
• (ii) ethylene-(meth)acrylic acid-acrylic ester terpolymer ionomer resin obtained by neutralizing with sodium ion and/or ethylene-(meth)acrylic acid-acrylic ester terpolymer ionomer resin obtained by neutralizing with zinc ion, and
• (iii) ethylene-(meth)acrylic acid copolymer ionomer resin obtained by neutralizing with magnesium ion, and wherein,
• the outmost layer of the cover has a Shore D hardness of 45 to 60,
• the ionomer resins (i) and (ii) have a flexural modulus of 10 to 100 Mpa and a Shore D hardness of 30 to 50, the ionomer resin (iii) has a flexural modulus of 200 to 500 Mpa and a Shore D hardness of 55 to 70.