Engineered wood frame. All wood is kiln-dried for added durability. High-gauge sinuous springs provide 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 4. Semi-attached seat cushion. 360-degree metal swivel base. This contract-grade item is manufactured to meet the demands of commercial use in addition to residential. See more. Made in Cambodia