With its cover of PU artificial leather or grained genuine leather (Onyx Deluxe) it offers the "look and feel" of a real executive chair as well as extended features. Its exclusive functionality, which includes the wide frame, the flat seat, the 4D armrests, the rocking and locking function, the high-strength cast aluminium base, the exclusive quilting and 100% more cold foam than the AKRacing standard models, ensures maximum comfort and ergonomics for the best possible sitting experience.