| 摘要 |
The present invention relates to a putter-type golf club head with a face on a front side to hit a golf ball comprising a head main portion provided with a concave portion on a side of the face, and a face insert made of elastic material attached to the concave portion of the head main portion, the face insert having a three-layer structure comprising of a first layer disposed at the front, a third layer disposed at the rear, and a second layer disposed between the first layer and the third layer, each of the first layer, the second layer, and the third layer having a hardness of h1, h2, and h3 and a rebound resilience of r1, r2, and r3, and the first layer, the second layer, and the third layer satisfying the following relations: h2<h1<=h3, r1>r2, and r1>r3. |
