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. 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.