| http://www.w3.org/ns/prov#value | - Defined in detail, the present invention is an exercise device, comprising: (a) an outer shell having a first half and a second half which are attached together to form an interior chamber, a first side edge, a bottom, a second side edge and a top; (b) a tension assembly comprising a tension bolt extending from the interior chamber through an opening in the top and terminating in a tension adjustm
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