Hand-built frames with hand-finished upholstery.Solid oak and engineered hardwood frame with reinforced joinery.All wood is kiln-dried for added durability.High-gauge sinuous springs provide cushion support.Seat cushions have fiber-wrapped, high-resiliency polyurethane foam cores.Seat firmness: Soft. On a scale from 1 to 5 (5 being firmest), it’s a 2.Back cushions are poly fiber filled.60″ sofa has 1 back cushion; all other sizes have 2.Reversible cushions (Astor Velvet excluded) with zip-off covers.Concealed support legs for a streamlined profile.Due to tapered arms, the front of the sofa is slightly wider than the back.Assembled in the USA.