Built for long desk hours this 27 by 27 in high-back office chair pairs a breathable mesh backrest with a sponge-padded 20 by 21 in seat for cool ergonomic support. A pneumatic lift adjusts the seat from 17 to 20 in tall while a heating-compatible headrest soothes neck tension during back-to-back meetings. The 300-lb weight capacity supports adult use a five-caster steel base glides across hardwood tile or low-pile carpet and the mesh back keeps spine alignment supported through long writing sessions.