Booster seat apparatus

An invertible booster seat apparatus for use with a chair having a supporting seat and a laterally concavely curved seat back, said booster seat comprising:

• a pair of spaced apart side supports, each having a first support portion for engaging the supporting seat and a second support portion for defining an armrest, said side supports being invertible such that said second support portions engage said supporting seat and said first support portions define armrests;
• a seat section that interconnects said side supports between said first support portions and said second support portions, said seat section having a first seat surface for supporting a person thereon when said first support portions engage said supporting seat and an opposite second seat surface for supporting a person thereon when said second support portions engage said support seat;
• said seat section further having a horizontally, convexly curved rearward edge for conformably engaging the laterally concavely curved seat back of the chair;
• each said seat surface having a raised rim portion formed along said rearward edge and having a height that is less than the height of said side supports;
• a substantially fully open first back region formed adjacent said first seat surface and between said second side support portions for cooperating with said curved seat back of said chair to define a seat back for a person seated on said first seat surface;
• and
• a substantially fully open second back region formed adjacent said second seat surface and between said first side support portions for cooperating with said curved seat back of said chair to define a seat back for a person seated on said second seat surface.