Hand-built frames with hand-finished upholstery. Solid oak and engineered hardwood frame with reinforced joinery. All wood is kiln-dried to prevent warping. High-gauge sinuous springs provide cushion support. Seat cushions have fiber-wrapped, high-resiliency polyurethane foam cores. Seat firmness: Soft. On a scale from 1 to 5 (5 being firmest), we rate it a 2. Back cushions come with poly core wrapped in down & feather blend. Reversible cushions with zip-off covers (chaise cushion is not reversible). Concealed support legs (removable) for a streamlined profile. Sectional pieces attach via alligator clips (included). Assembled in the USA.