| 摘要 |
A back region having extensibility in a waist direction and provided with stopper members at both ends in the waist direction, an abdominal region provided with flap portions at both ends in the waist direction, and an absorber that bridges between the back region and the abdominal region are provided. It is set in such a manner that a length of the back region in the waist direction when it is stretched is longer than a length of the abdominal region in the waist direction, and a length of the back region in the waist direction when no force is applied from the outside is almost equal to the length of the abdominal region in the waist direction or shorter than the length in the waist direction.
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