Solid and engineered wood frame.Solid wood legs in a Blonde or Cool Walnut finish.High-gauge sinuous spring and webbed seat cushion support.Seat cushions have fibre-wrapped, high-resiliency polyurethane foam cores.Seat firmness: Medium. On a scale from 1 to 5 (5 being firmest), we rate it a 4.This contract-grade item is manufactured to meet the demands of commercial use in addition to residential.