This ergonomic mesh office chair is built with premium breathable nylon mesh on backrest and cushion for real time heat dissipation and long hour sitting coolness. Designed with S shaped high back and waist support, it corrects sitting postures and relieves back fatigue. Equipped with 90 degree flip up armrests, it can be tucked under desks to save extra space. The chair supports 4 inch pneumatic height adjustment and smooth 360 degree rotation with silent floor friendly PU casters. Complete installation tools and detailed instructions allow easy assembly within 10 to 15 minutes, suitable for offices, bedrooms, studies and living rooms for daily use.