Yaheetech Ergonomic Desk Chair Executive Office Rolling Chair with Flip-Up Armrests Adjustable Lumbar Support Mesh Swivel Computer Chair for Home Office Black - YT-00123264

• 【Ergonomic Office Chair】Our mesh office chair is equipped with adjustable lumbar support, flip-up armrests, S-shaped backrests, and waterfall seat cushion. All this great ergonomic features makes an universal desk chair to serve different needs, such as working, gaming, and studying. Optimized comfort with great flexibility, this ergonomic mesh chair has everything you need. 【High Backrest】Ergonomic curved high back supports your back and spine properly and comfortably. With a 95-105cm/37.5-41.5’’ height backrest, this chair is suitable for most individuals. 【Back Height Adjustment】This multi-functional office chair allows our customers to position the backrest’s lumbar support area within a fixed range for their customized support. This ergonomic feature helps fast forward your office hours throughout a day by releasing the pressure of your back spine with full and customized support to your back and lumbar. 【Center-Tilt Tension】There is a tilt tension knob beneath the seat to adjust the recline angle and amplitude of the backrest. Customers can simply tighten or release the center-tilt tension by turning the control knob left while rocking back and forth. 【360° Swivel Chair】Five mute rolling castors serve a smooth and effortless movement, these nylon wheels can move from any direction without causing scratches on the floor. Nylon wheels are sturdy and durable, capable of long-term usage.