Mid-back big man's chair, 24/7 mutli-shift, task chair featuring a syncro tilt control, extra large casters with 25% more wieight capacity, heavy duty die cast aluminum base, heavy duty pneumatic cylinder rated for 350 lbs, ABS reisnforced inner back, multi-ply reinforced seat board, high impact plastic outer back cover. Limited 10 year warranty for 24 hour use 7 days a week for persons weighing less than 350#. Standard features include 360 degree swivel, pneumatic seat height adjustment, tilt tension control, back adn seat tilt in 2:1 ratio, 5 point tilt position lock, anti-launch tilt release, ratchet back height adjustment