This is Spinefitter by SISSEL: a physical therapy and training device that uses 28 interconnected balls to improve joint mobility and reduce tension in your body. It is designed to perfectly align around the spine and target hard to reach muscles.
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The Spinefitter targets the vertebral joints of the spine. It has a lightweight, portable design, so you can easily take it with you anywhere. It has max weight capacity of 330lbs.
[where to get it] [official site]
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