MULTI-FUNCTIONAL MESH OFFICE CHAIR - Height adjustable, flip-up armrests, breathable mesh back, built-in lumbar support, flexible 360°swivel, high-resilience foam cushion, rocking mechanism with tilt tension adjustment knob, sturdy gas lift cylinder and durable nylon base and casters. ERGONOMIC OFFICE DESK CHAIR - Our office chair featured an ergonomic design, breathable s-shaped screen mesh back follows the curve of your spine to give you more comfort, built-in lumbar support to support your lower back and reduce back pain. COMFORTABLE OFFICE TASK CHAIR - This office chair padded with a high-resilient foam cushion, covered by soft mesh cloth, breathable and comfortable. Waterfall seat edge featured to relieve stress of your thigh, wider seat size (20.9"W x 19.7"D) to give you more space and flexibility. CONVENIENT OFFICE CHAIR - The armrests of our office chairs can be fold up whenever you want, performing as an armless chair, slide it under your desk, quite flexible and space-saving. HIGH QUALITY DESK CHAIR – All our desk chairs come from a responsible manufacturer. High density mesh, soft mesh cloth, sturdy gas lift cylinder, durable nylon base and casters are in good and trustworthy quality.