designer's own words:a revolutionary outdoor sofa with easy-to-put-on protective cover. both the sides/back/bottom (dark colored as shown in images) and the cover (yellow in color in images) are made from waterproof fiber. when the sofa is in use, the cover is rolled up and stowed on the back of the sofa with three buckled belts. after use, unbuckle the belt, spread up the cover and pull the two watertight zippers on the edge of the two armrests all the way down, then the sofa is fully protected from rain and dust. legs in aluminum alloy.