Plastic shadowline support legs in an Espresso finish. Kiln-dried engineered hardwood frame with mortise & tenon joinery. Sectional pieces attach via alligator clips (included). Hand-built frames with hand-finished upholstery. All wood is kiln-dried for added durability. Removable legs. High-gauge sinuous spring and webbed cushion support. Cushions have fiber-wrapped, high-resiliency polyurethane foam cores. Seat firmness: Medium. On a scale from 1 to 5 (5 being firmest), we rate it a 3. Reversible cushions with zip-off covers. Hand upholstered and assembled in the USA.