| 摘要 |
PROBLEM TO BE SOLVED: To provide a ball for indoor play which enables enjoying of a game in the same sense as that in an outdoor court within a indoor place such as a gymnasium SOLUTION: A ball A for indoor play has the body 2 thereof covered with a ball cover member 1 with a shape of a hollow ball made of a soft polyurethane foam with a three-dimensional skeletal mesh structure produced by a special treatment for removing foamed films covering between skeletons of the soft polyurethane foam as raw material in which the foamed films remain to form open cells. |
