High-back Executive Spine Align Chair features a unique split-back support and comfort fit foam that cradles your body. Spine Align unique seat back and head rest adapt naturally to your posture giving you the support you need while you work. Chair features a stain-resistant fabric on the seat and seat back and flame-resistant, ergonomically contoured, foam padding. Functions include pneumatic seat-height adjustment from 16" to 20" , seat-depth adjustment, 360-degree swivel, BIFMA approved tilt adjustment, tilt tension, tilt lock, posture mechanism/lock and multi-task control. Padded arms are made from wear-resistant polypropylene. Durable, five-star polypropylene base has five 2" easy-glide casters.