Patent ID: 8007417

Claim:
An exercise device for strengthening muscles of a user in a conventional work, home or other environment, comprising: (a) a plurality of deformable sections, including an uppermost section and a lowermost section, said plurality of sections forming a continuous baffled wall; (b) a deformable domed seat positioned atop said uppermost section, said domed seat adapted to conform to the buttocks of a user when said user sits on said seat; (c) a distance between said domed seat and said lowermost section is greater than a distance between opposing sides of said baffled wall; (d) said lowermost section being substantially flat and said continuous baffled wall, said domed seat and said lowermost section together enclosing an airtight hollow interior, said interior constituting a single, continuous space extending from said domed seat to said lowermost section; (e) said domed seat being adapted to depress within said hollow interior; (f) said baffled wall having a sufficiently small thickness to enable said domed seat and uppermost section to shift in all directions horizontally while said lowermost section remains substantially in place as a user sits on the device and shifts position; (g) the material forming the domed seat and the deformable sections being a plastic and having sufficient thickness such that the device is generally rigid so as to be able to take the positions set forth in (e) and (f) above.