Engineered hardwood frame with mortise & tenon joinery.All wood is kiln-dried for added durability.Lumbar pillows and throw pillows included.High-gauge sinuous springs provide cushion support.Seat cushions: Fiber-wrapped high-density polyurethane foam.Handcrafted.Seat firmness: Soft. On a scale from 1 to 5 (5 being firmest), it’s a 1.Back cushions: 50% polyester fiber, 45% duck feather and 5% duck down in down-proof ticking.Pieces are fully upholstered and may stand alone.1-Arm Chair is the same size as the Corner and can be used on left or right side; pillows can be switched and hardware can be removed.Sectional pieces attach via alligator clips (included).Cushions are reversible.Make sure it fits! See our guide on measuring for delivery.Assembled in the USA.