The Evac+Chair Comfy Seat is a simple to fit device that sits on the frame of the Evac+Chair and features a moulded base & a detachable cushion with integrated leg straps. Its purpose is to accommodate persons of greater girth & those with prosthesis (false legs), leg callipers, leg amputees, those with plaster casts & persons with pre-operative & post-operative conditions pertaining to the hip, femur or both.