Volt task chair offers a unique combination of style, scale, comfort and functionality. Larger seat and back provide maximum comfort, and the 360-degree swivel mechanism with tilt, tilt-lock and tilt tension options allow you to adapt the chair to your personal needs. Tilt tension controls the amount of resistance felt as you lean back, accommodating a variety of tasks and body types. Tilt lock keeps the chair in an upright position when necessary. Swivel/tilt allows the chair to recline effortlessly, promoting movement and comfort throughout the day. This ergonomic task seating design includes a mesh back, fully padded leather seat and 2-1/2" hooded, dual-wheel casters. Seat size is 19-1/4" wide x 18" deep. Seat-to-floor height ranges from 18-1/4" to 22-3/8". Back measures 18" wide x 18-3/4" high from the seat. Chair also features a plastic outer back and black frame and meets or exceeds applicable ANSI/BIFMA and ISTA performance standards. Height-adjustable arms are sold separately.