Single frame in shaped beech plywood. Flexible polyurethane padding and CFC free. Armrests in pressure die-cast aluminium with padded upholstered elbow-rest. 5-spoke base in pressure die-cast aluminium.Tilting device or tilting device that can be locked into various MultiBlock. Standard dual-tread self-locking swivel castors, Ø 65 mm, for fitted carpet or linoleum floors. Slide frame in oval tubular steel chrome-plated or black lacquer and reinforced core in front curve, padded and upholstered arm pads.