Ergonomic Chair, 42 Inch Max, Fully Meshed Height Adjustable Office, Black. Product Details Experience the ultimate ergonomic support with Ergomax's adjustable office chairs. Featuring a very appealing look and contemporary design, this chair will offer all the comfort you need during your work day. Made of high-quality and breathable mesh, this office chair can be easily adjusted to fit your height and to provide exceptional lumbar back support. Using its adjustable features, you can take pressure off your neck and shoulders and experience relaxation. Keep your body cool and comfortable throughout a busy day with Ergomax's mesh office chairs. COMFORTABLE OFFICE CHAIR: Supportive back lumbar for an extra comfortable experience during long periods of sitting; no need to be uncomfortable at work, enjoy adjustable comfort with this chair ERGONOMIC AND ADJUSTABLE: Up and down adjustment from 38?-42? offers a versatile range of motion and built-in lumbar support gives extra relaxation DURABLE MATERIAL: Ultimate ergonomic office chair with nylon frame, nylon height adjustable armrests, 320mm nylon base with powder coated castors, iron gas lift, iron mechanism, and Korean mesh LOCKABLE BACK: Synchro-tilt, any position locking mechanism for keeping your body upright and lowering the pressure of sedentary EASY INSTALLATION AND WARRANTY: We strive to make it the easiest office chair to assemble. Our detailed instruction manual along with the instructional video will make certain that you install it within less than 20 minutes. All ErgoMax office chairs are under the ErgoMax Office 1 year Hassle-Free Warranty. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.