Hand-built frames with hand-finished upholstery. Solid pine and engineered wood frame with reinforced joinery. All wood is kiln dried for added durability. Fully upholstered on all sides. Plastic shadowline support legs in Black. High-gauge sinuous springs provide cushion support. Frame padding includes a top layer of memory foam. Seat cushions have fiber-wrapped, high-resiliency polyurethane foam cores. Seat firmness: Soft. On a scale from 1 to 5 (5 being firmest), it's a 2. Back cushions have foam fill. Pieces included: 1 armless single and 2 corners. Modular pieces can be used standalone or added on to later. Sectional pieces attach via alligator clips (included). Assembled in the USA.