A furniture cover is provided that has a substantially t-shaped, substantially continuous, fabric body having a generally elongated central trunk portion, and two outwardly extending arm portions. The central trunk portion is sized to extend over and substantially across the back, seat and front of a seating device. The arm portions are sized to extend over and substantially across the arms of the seating device. The fabric body has a first layer of comfort fabric for exposure to the user; and a second layer of waterproof fabric, seamed around a perimeter edge to the first layer, so that the second layer provides a waterproof barrier across the covered portions of the seating device.