Essentials Swivel Armless Mid Back Mesh Task Chair - Ergonomic Computer/Office Chair (ESS-3020) COOLING MESH BACK WORK CHAIR: Added comfort with breathable fabric that you can relax into COMFORTABLE SWIVEL CHAIR: Pneumatic seat height adjustment and 360-degree swivel allows you to customize your comfort ROLLING OFFICE CHAIR: Smooth-rolling casters and durable wheels hold up even under heavy use ERGONOMIC POSTURE SUPPORT: Ergonomic back frame provides support and comfort HEAVY DUTY AND DURABLE OFFICE FURNITURE: Durable sandwich mesh, generously proportioned seat, and 250 pound weight capacity COMPUTER CHAIR WITH WARRANTY: Essentials by OFM limited warranty