Patent ID: 7942796

Claim:
An exercise device, comprising: a hemispherical body having: a central base; a plurality of rib-like structures radiating from the central base, each rib-like structure: having an exterior surface with a longitudinal axis; terminating into a radiating end; and having at least one wing, formed substantially parallel to the longitudinal axis, that protrudes away from the exterior surface to a given distance that increases along a direction towards the radiating end; and an annular-shaped band connected to the radiating end of each rib-like structure such that the central base, the plurality of rib-like structures, and the annular-shaped band form a cup-like enclosure operable to seat therein a bottom portion of an exercise ball, the at least one wing of each rib-like structure operable to provide an incremental resistance against a rolling movement of the exercise ball along a substantially flat surface when the exercise ball is seated therein.