Description
ACX is a compact task chair whose automatic synchronised mechanism offers optimum ergonomic comfort for different-sized users – without them having to adjust anything except the seat height. Despite these complex technical functions, ACX has a simple understated appearance with clean lines. The construction, materials, production, logistics and maintenance of ACX are designed to achieve an exceptionally long life cycle with the smallest possible carbon footprint.
ACX Soft stands out from the other models in the ACX family in that its backrest has a padded knit cover. This soft comfortable textile made of recycled polyester lends the task chair a particularly inviting appearance. Available in a choice of seven colours, the knitted fabric can be combined with a light or dark chair frame, allowing for a wide variety of configurations. The seat cover can be selected in a complementary knitted fabric or in the textile Plano.
Details
Material: recycled polyester 100%
Abrasion resistance: 40,000 Martindale
Lightfastness: Type 6
Fastness to rubbing: Grade 4–5 dry and wet
Pilling: Grade 4-5
Seat mechanism: synchronised mechanism with automatic weight adjustment and two backrest resistance settings (hard or soft). Equipped as standard with seat height and seat depth adjustment. Optionally available with or without synchronised forward tilt (can be disengaged). Mechanism can be locked in upright sitting position.
Seat upholstery: polyurethane foam or PU-foam-free padding with form fit seat (F). Knit or fabric seat cover
Backrest: back frame with semi-closed shell and quilted knit cover with upholstered effect. Frame made of polypropylene (deep black or soft grey). Optional height-adjustable lumbar cushion
Armrests: height-adjustable armrests F, width and depth. Armrest supports made of polyamid. With PU-foam-free (F) pads.
Base: five-star base made of polyamide with double castors (Ø 60 mm)
Dimension:
W650 x H1105 mm
Designer
Antonio Citterio, 2023

The architect and designer Antonio Citterio, who lives and works in Milan, has collaborated with Vitra since 1988. Together they have produced a series of office chairs and various office systems, as well as products for the Vitra Home Collection. The Citterio Collection is constantly being expanded.