| abstract |
The golf ball contains a relatively large polymer core and has a soft ball compression ratio. Such a polymer is, in the illustrated embodiment, a highly neutralized acid polymer. The golf ball may optionally include an outer core made of another material such as a thermosetting polybutadiene rubber. The golf ball may optionally include a mantle layer made of a ionomeric material. Internal cores having a diameter of 24 mm to 40 mm, and in some designs of 28 mm to 32 mm, exhibit increased iron initial speed and lower iron spin while maintaining driver performance. |