The Vibern cognac-colored leather office chair will bring class and comfort to your office. Perfect your work environment If design and comfort are your key words when it comes to an office chair, then we have the ideal option for you. Its padded leather cushion combined with its stainless steel structure make the Vibern office chair an elegant and chic piece. Practical options. The Vibern office chair is height adjustable and can swivel 360 degrees. It is available in black, white and cognac. Choose your favorite color and perfect your office space!