Abstract: An inflatable article made of impervious flexible material includes a top sheet, a bottom sheet, an inner sheet and an outer sheet that confine a looped air receiving space. The top sheet includes a seat portion sized to seat at least one person thereon. The inflatable article further includes at least one dividing wall disposed between the top sheet and the bottom sheet and dividing the air receiving space into at least two compartments, and at least two vertical partition walls disposed in each of the compartments immediately below the seat portion. Each of the vertical partition walls has a top edge sealed to one of the top sheet and the dividing sheet, and a bottom edge sealed to one of the dividing sheet and the bottom sheet. The vertical partition walls define at least one chamber that is in fluid communication with a corresponding one of the upper and lower compartments.