Structure: wooden frame padded with polyurethane foam and resin-backed velveteen upholstery.
Seat springs: steel springs inside a tubular metal frame covered with elastic belts.
Back springs: steel zig zag springs.
Seat cushions: core made of foam covered with feathers.
Loose back cushions: feather-filled.
Completely removable upholstery.
Also available in the sofa-bed version with polyurethane mattress and orthopaedic or metal mesh base.
In this case the spring system is eliminated.