| 摘要 |
An abdominal exerciser device comprising a resilient rubber ball rollably engaging a plurality of ball bearings mounted inside an almost complete in height semi-spherical cavity upwardly oriented within a self-standing casing and allowing the rubber ball a free-rolling action when applied against a bo dy part such as the abdominal, waist and/or hips effectively pressuring and massagin g the muscles of the body part. One or more casings may also be mounted on absorbing materials themselves mounted onto a rigid frame structure adapted to support a user.
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