Solid pine and engineered hardwood frame. All wood is kiln-dried for added durability. Made with FSC®-certified wood from responsibly managed forests. High-gauge sinuous spring and webbed 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), we rate it a 3. Back cushions are fiber filled.