ERGONOMIC BIG & TALL OFFICE CHAIR: Provides exceptional seating for everyone from the CEO to the front office staff, ensuring the perfect balance of ergonomic comfort and optimal support for each employee PRESSURE-RELIEVING COMFORT: Ventilated mesh high back design with integrated lumbar support prevents overheating and promotes better posture, while the contoured back and seat with CAL 117 fire retardant foam provides hours of comfort GREAT FOR ALL BODY TYPES: Big and tall office chair is built to support all body types including larger and taller users with a heavy-duty base that holds up to 500 lbs. HIGHLY CUSTOMIZABLE SEATING: Pneumatic seat height adjustment lever makes it easy to raise and lower the seat, while the tilt tension adjustment allows you to rock or recline or lock the seat in place EASY TO ASSEMBLE: Measures 32"W x 29"D x 38.5-45.5"H and can be assembled quickly with the included tools and step-by-step instructions, and it wipes clean with a damp cloth for easy cleaning