JOINSUN Home Office Desk Chair with Lumbar Support, Ergonomic Mid-Back Mesh Chair with Flip-Up Arms & Smooth Wheels – Ideal for Study, Dorm, or Work, Grey

Ergonomic Mid-Back Design: Curved mesh back with reinforced lumbar cushion promotes healthy posture and reduces lower back strain during long hours. Breathable & Supportive Seat: Mesh back enhances airflow, while the thick foam seat provides all-day comfort without trapping heat. Sturdy Base with Smooth Mobility: Durable casters glide smoothly on various floors; reinforced 5-point base supports up to 250 lbs. Space-Saving Flip-Up Arms: Padded armrests provide comfort and flip up easily—great for compact workspaces and storage. Adjustable Height & Rocking Tilt: Seat height adjusts from 18.5" to 22.2", with a built-in rocking function for added flexibility and relaxation.