Hand-built frames with hand-finished upholstery. Solid eucalyptus and engineered hardwood frame with reinforced joinery. High-gauge sinuous springs provide cushion support. Seat cushions have fiber-wrapped, high-resiliency polyurethane foam cores. Seat firmness: Medium. On a scale from 1 to 5 (5 being firmest), it's a 4. Back cushions are foam and fiber filled. Cast metal legs. Sectional pieces attach via alligator clips (included). Loose cushions with zip-off covers; sofa seat cushions are not reversible and ottoman cushion is fixed. Hand assembled in the USA.