Key Smart Advanced Kastel chair The Key Smart Advanced Kastel designer office chair is characterised by the modern style of the perforated polypropylene backrest, available in white or black. The seat is upholstered in various fabrics and it is also possible to have this office chair with an upholstered backrest, also with a perforated backrest. The built-in syncron mechanism is self-adjusting and allows the height, tilt and depth of the seat to be adjusted. Key Smart Advanced is the epitome of comfort for office workers, without sacrificing style.Discover Kastel products on Arredaremoderno.com! KEY SMART ADVANCED KASTEL CHAIR STRUCTURE: The wheeled base is made of nylon and metal in the finishes: APS black nylon APW white nylon APG grey nylon AL6 polished die-cast aluminium AL7 polished die-cast aluminium AL9 painted die-cast aluminium ANN black painted die-cast aluminium AL3 die-cast polished aluminium AL5 polished die-cast aluminium AWW white painted die-cast aluminium AL4 polished die-cast aluminium w/pins APP black nylon w/dynamic feet The backrest is made of polypropylene in the following finishes: black white The seat is upholstered in: Category A Category C Category D Category P A version with upholstered backrest is also available. View and choose the colour in the material sample book and enter the fabric colour code in „Product customisation“. KEY SMART ADVANCED KASTEL CHAIR DIMENSIONS: Key Smart is available in the following dimensions and mechanisms: gas syncron self-adjusting translator/F (self-weighing syncron slide system/F) DELIVERY TIMES: Estimated shipping time 4 working weeks from verification of payment received.