The seat and the backrest, as well as the optional headrest, are made of beech plywood;
the padding is made of flexible self-extinguishing polyurethane with differentiated density. Alternatively, a micro-spring cushion is available for maximum comfort.
The lumbar support is made of polypropylene, with side adjustment knobs for a range of 80 mm.
The chair's oscillation movements, sincron, sincron with seat depth adjustment and sincron with seat depth and negative angle adjustment, are of the multiblock type, with multi-position locking, fine adjustment of the oscillation and anti-return safety system.
Height adjustment and seat rotation are done through a gas column.
Fixed armrests are made of self-skinning black integral polyurethane or with a chromed steel support structure, and upper finish in self-skinning black integral polyurethane or upholstered. In the adjustable armrests the steel frame is always chromed, while the upper finish can be in polypropylene or upholstered, or in polyurethane just for the 4D version.
The 5-spoke base can be made of reinforced nylon or polished aluminium.
The self-braking swivel casters are made of reinforced nylon for soft ground or with polyurethane tread for hard ground. The fixed feet are made of reinforced nylon.
The sled base is made of tubular steel with a diameter of 25x2 mm, painted with epoxy powders or chromed.
armchair, office, ergonomic