The invention provides a seat cushion for an individual suffering from loss of sensation in the buttocks but having sensation in higher regions of the trunk. The cushion may be used, for example, in individuals who have undergone spinal cord injury (SCI). The seat cushion is formed from a flexible material and includes two closed systems containing a fluid. Each closed system includes a one or more buttock cells and one or more lateral cells, each buttock cell of the system being in fluid communication with at least one of the lateral cells of the system. The buttock cells determine a cushion layer and at least a portion of the lateral cells is above the cushion layer.
