Boss Modern Executive Conference Chair - Black by Boss Office Products.Beautifully upholstered with ultra-soft, durable and breathable CaressoftPlus upholstery. Passive ergonomic seating with built-in lumbar support. Chrome padded armrests. Upright locking position. Pneumaitc gas lift seat height adjustment. Adjustable tilt tension control. Large 27" chrome base for greater stability. Hooded double wheel casters. Available in Black, Orange or White.