Ergonomic BackThis swivel computer chair is thoughtfully designed with S-shaped back to fit in the curvature of an individuals back and lumbar. It gives full support to your lumbar and upper back to make your long office hours and intensive study sessions easier in a better sitting position. 360 MobilityOur study chair is equipped with a wide star nylon base with 5 wheels. Silent castors do not produce noises while moving, they also do not cause any scratches and damage to the floor with a smooth finish. This office chair can swivel 360 effortlessly from task to task. Adjustable Seat HeightSeat height of our ergonomic computer chair can be adjusted for 43-56cm/17-22. It has the flexibility to customize our customers preferred sitting position according to their needs. Simply pull the lever beneath the seat while sitting if you want to lower the seat. - EONLION Ergonomic Armless Kids Desk Chair Swivel Rolling Study Chair in Blue