About this item ?????????? ?????? ??? ?????? ?????????? — This tall office chair features an ergonomic design with an "S" shaped backrest and independent lumbar support to alleviate lower back pressure. The adaptive lumbar support prevents lumbar suspension, muscle strain, and spinal damage, ensuring comfort during extended sitting sessions. ??????????? ?????? & ???? ???? — Designed with extra height, this standing desk chair supports an adjustable seat height from 22.8" to 30.3" and includes a 20" adjustable foot ring. Easily adapt the chair to fit various desk heights, making it suitable for drafting tables, standing desks, and traditional workstations. The large foot ring provides additional support, ensuring proper leg positioning, reducing leg pressure during long hours, and promoting blood circulation. ??????????? ???? ?????? & ?? ???????? — The tall desk chair is made with breathable mesh fabric, perfect for long periods of sitting, promoting airflow, and preventing sweating. The 3D adjustable armrests, made with soft PU padding, can be adjusted forwards, backwards, up, down, and rotated 20°. With 90°-135° backrest adjustment and a 3.9" thick padded seat, this extended height office chair relieves the pressure of prolonged sitting, ensuring lasting comfort. ??????? ???????? & ?????????? — Equipped with silent rolling casters, this high office chair allows effortless movement within your workspace. The drafting chairs adjustable height model features high-density foam cushioning and a durable frame. The heavy-duty metal base supports up to 400 lbs and provides a 360° swivel function, making it a reliable choice for any office environment. ???????? ??????? & ??????? — This counter height office chair includes a 24-month warranty and a detailed installation guide. Manufactured to high standards and rigorously tested before packaging, this high desk chair guarantees the best quality and service for every customer, customer support is available 24/7 to provide prompt assistance. › See more product details