Engineered hardwood frame with mortise & tenon joinery. All wood is kiln-dried to prevent warping. Plastic shadowline support legs in an Espresso finish. 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), it's a 3. Reversible cushions with zip-off covers (chaise seat cushion is not reversible). Chaise seat cushion features a top seam. Removable legs. Hand upholstered and assembled in the USA.