‎19.3 Inches

【About Balmstar Ergonomic Office Chair】Balmstar is a professional office chair manufacturer, we produce ergonomic office chairs. We sell more than 50,000 ergonomic office chairs on Amazon every year, and our office chairs are highly recognized and satisfied by the majority of consumers. Most of our products have passed BIFMA/SGS certification.The office chair offers 4 support points (head, back, hip, and hands) along with lumbar support. Balmstar has designed the desk chair to cater to various needs, featuring adjustable seat height, headrest adjustment, lumbar support, and back support. This computer chair is ideal for extended sitting and helps reduce discomfort. 【Enhance your seating experience】This smart office chair perfectly conforms to your body's natural curves, offering a maximum tilt of 135°. The headrest can be adjusted up and down at various angles to support your neck, and the seat can be raised or lowered to accommodate any desk. Whether you are tall or short, you can effortlessly maintain the perfect posture for work or rest. 【Comfortable Office Chair】The backrest of the office chair is made of breathable mesh fabric, which has strong tensile strength and can keep the back cool and comfortable. The ergonomic office chair can alleviate fatigue caused by prolonged sitting. The cushion of the computer chair is made of memory foam material, which is both soft and firm, and does not deform from prolonged sitting.