Hannes Wettstein Norman Seatingfor Cerruti Baleri System of armchairs and two or more seater sofas. Internal structure in steel tubing for total disassembly with steel leaf-spring to improve the flexibility of the backrest. Filler in CFC-free flexible cold-processed polyurethane. Feet in steel tubing coated with epoxy powders in satin aluminium finish or in polished stainless steel. Covering in fabric, synthetic material, leather.