Marsail Office Chair Ergonomic-Desk Chair: Mesh Back Home Office Chair, Black Product Details ????-???? ???????? ????????: This Marsail office desk chair full support for your neck, back, hips, and arms. The S-shaped backrest conforms to the shape of your spine to provide a comfortable sitting position all day long. Ergonomic office chairs can improve sitting posture for less fatigue and strain on your body ?????????? ?????? ???????: Our ergonomic office chair comes equipped with adjustable lumbar support, Adjustable up and down 2 in,allowing you to tailor the support to your specific needs. Whether you require extra lower back support or seek a more comfortable sitting posture, we've got you covered, ensuring your spine maintains the correct curvature ???????? ?????????? ?????????: This home office chair has a 4 inch lifting range to meet the needs of people of different heights, it also has a reclining function of 90 to 115 which allows you to relax yourselves after work ????-?? ???? ???? ?????: The black office chair has curved armrests with soft foam and mesh material to provide cushion for your arms and elbows. The armrests can be flipped up by 90 degrees so you can easily slide the chair under a desk to save space when not in use ??????? ????????????: This BIFMA-certified computer desk chair is equipped with an SGS-certified Class 3 gas lift and large 25? steel base to ensure stability for up to 300 lbs of weight. The 360 PU caster wheels roll smoothly and silently without causing damage to the floor ??????????? ??????????: The mesh office chair features a 3.14-inch soft, high-density foam cushion that minimizes pressure on your hips and tailbone, providing long-lasting comfort and support. The chair backrest is made of breathable mesh that allows better airflow to keep you cool and dry ???? ?? ????????: We offer installation instructions and videos to help you easily and quickly assemble the office chair yourself. It usually takes about 10-20 minutes to assemble. If you have any questions, please feel free to contact us ?-???? ???????? ?????????: We provide 5 years of after-sales guarantee! If there are problems such as missing parts, product damage, or other unsatisfactory issues, please contact us via the email address provided in the instruction manual- our dedicated team responds within 24 hours during workdays. Thank you for choosing Marsail office chair. We will be responsible for your choice ???????? ????????: 1.For those with large hips, please sure the width of the office chair before purchasing.2.This ergonomic office chair can only be locked in an upright position, but not in an inclined position. 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.