Natural Teak is untreated, finely sanded premium teak. The wood will weather to a silvery grey with outdoor exposure. Weathered Teak is a handcrafted, multistep finish. If left uncovered, our Weathered Teak finish will wear away with exposure to the elements. Once the applied finish has worn off, the furniture will begin to acquire the beautiful silvery-grey patina that is typical of untreated premium teak wood. Teak wood is inherently durable and exceptionally weather resistant.  Constructed using mortise-and-tenon joinery Cushion set features poly-wrapped quick-dry foam seat and back cushions; an open-cell reticulated foam core and mesh bottom panel allows water to drain rapidly and air to circulate freely Cushions come in a choice of luxury performance fabrics designed to weather the elements and resist stains, spills, fading and mildew. Zippers resist corrosion. Our custom-fit outdoor furniture covers (sold separately) are strongly recommended to protect furniture from the elements and minimize aging.