Stability ball control device with radial control surfaces of increasing widths

An exercise device, comprising:

• a body having:
• an annular hub;
• rib-like structures radiating from the hub, each rib-like structure:
• having an exterior surface defining a longitudinal extent;
• terminating at a distal radiating end;
• and
• having at least one wing formed substantially parallel to the longitudinal extent and protruding away from the exterior surface to a given distance that increases along a direction towards the radiating end;
• and
• an annular band connected to the radiating end of each rib-like structure such that the annular hub, the rib-like structures, and the band together form an enclosure operable to surround a bottom portion of an exercise ball seated therein, 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.

An exercise device, comprising:

• a body having:
• a plate-shaped central base;
• rib-like structures radiating from the base, each rib-like structure:
• having an exterior surface defining a longitudinal extent;
• terminating into a radiating end;
• and
• having at least one wing formed substantially parallel to the longitudinal extent and protruding away from the exterior surface to a given distance that increases along a direction towards the radiating end;
• and
• an annular band connected to the radiating end of each rib-like structure such that the base, the rib-like structures, and the band together form a cup-shaped 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.