Seat Cover: Get a waterproof foldable boat seat cover. Fit: Elastic hem for a snug fit on any chair! Material: Made from heavy duty oxford polyester with a water resistant PVC coating. Size: Small - 56 x 61 x 64cm. Large - 65 × 65 × 120cm. Foldable: Folds away with ease when not in use. Waterproof Boat Seat Cover | Small | Living Social