JOINSUN Ergonomic Mesh Office Chair with Lumbar Support, Mid-Back Swivel Desk Chair with Flip-Up Arms, Breathable Computer Chair with Wheels for Home Office, Study, or Dorm, Black

Ergonomic Mid-Back Support: Engineered with a curved mid-back and reinforced lumbar cushion, this ergonomic chair encourages proper alignment and relieves lower back pressure—perfect for long work or study sessions. Cool & Cushioned Comfort: The breathable mesh back promotes airflow, while the high-resilience foam seat keeps you supported and comfortable throughout your day without heat buildup. Durable Wheels & Solid Base: Features smooth-rolling casters that move effortlessly across wood, tile, or carpet. A reinforced 5-point base provides stability and supports up to 250 lbs with ease. Flip-Up Armrests for Versatility: Padded armrests offer extra support when needed and flip up when not—ideal for sliding under desks or saving space in compact areas like dorms or bedrooms. Height Adjustable with Rocking Tilt: Customize your sitting position with easy seat height adjustment (18.5"–22.2") and enjoy a gentle rocking function for added relaxation during breaks.