Breathable mesh back and seat for enhanced comfort Height-adjustable lumbar support system Flip-up armrests for flexible workspace configuration Pneumatic height adjustment and tilt control Durable nylon base with non-marking casters This ergonomic office chair is engineered to provide optimal support throughout extended work sessions. The advanced mesh construction promotes continuous airflow, effectively reducing heat buildup and maintaining a comfortable seating temperature. The scientifically contoured lumbar support system can be precisely adjusted vertically to align with the natural curve of your spine, helping to minimize back strain and promote proper posture. The innovative flip-up armrest design offers versatile functionality, allowing users to slide the chair completely under desks when not in use or create additional workspace when needed. The chair's pneumatic adjustment mechanism enables smooth height transitions while the tilt tension control allows customization of rec