Engineered hardwood frame with slot & tenon joinery. Solid wood legs in an Espresso finish. High-gauge sinuous springs provide cushion support. Seat cushions: Fiber-wrapped high-density polyurethane foam. Back cushions: 50% polyester fiber, 45% duck feather and 5% duck down in down-proof ticking. Loose, reversible cushions with zip-off covers. Folds out to reveal a Queen-sized mattress. Gel mattress features a 2-layer construction of high-density foam and gel-infused foam. It’s designed to contour to the body and wick away body heat. Mattress ticking has an ultra-soft, breathable knit. To see the full assortment of potential add-on pieces, see the Harmony Modular Collection page. Assembled in the USA.