BEVCO's Everlast chairs are specifically designed for outstanding comfort and long-lasting use in the toughest work environments. The black polyurethane seat and back are anti-bacterial, impervious to water, oil, and most chemicals; puncture resistant and easy to clean. This articulating tilt model features simultaneous seat and back adjustments to properly position the angle of the chair for increased comfort during extended sitting durations. The contoured back is fully adjustable encouraging proper spinal alignment while the convenient handle makes moving the chair effortless. The waterfall seat aids in lower body circulation, improving overall wellness. The pneumatic height adjustment allows you to easily change your seat height from 25" - 30". Ergonomic adjustable arms enable the user to relieve neck and shoulder tension. The stool features a sturdy 22" diameter black tubular steel base with welded footring. Model comes with dual wheel hard floor casters.