ErGear Ergonomic Office Chair - High Back Adjustable Lumbar Support & Headrest Mesh Computer Chair for Home Office, Gaming & Work - Black - Perfect for Long Hours Sitting & Back Pain Relief

【Ergonomic Backrest for Optimal Posture】2" height-adjustable lumbar support paired with 1.6" of soft cushions minimizes pressure and gives you ultimate comfort. With a unique S-shaped backrest design, it helps you maintain a better posture while reducing spinal pressure and back pain

【High-Resilience Memory Foam Seat】It features a thick 4" memory foam seat cushion that balances softness and support. The waterfall edge design conforms to your body, providing ample support to relieve pressure on your hips and tailbone

【Fully Adjustable for the Perfect Fit】Designed for users 5'1" to 6'2", it features 4.7" of seat height adjustment and a 2.4" adjustable headrest. The reclining backrest can be tilted from 90° to 120°, allowing you to focus on work and relax. The soft, reversible armrests provide additional support or can be tucked away to save space

【SGS & BIFMA Certified Durability】Built to last, it features an SGS-certified Class 3 gas lift, a sturdy 25-inch steel base, and durable PU casters that can hold up to 300 lbs. It has successfully passed the BIFMA durability test, ensuring reliability for years of long-term use

【Ease of assembly】All tools are included, with the included detailed instructions and labeled hardware, you can use them to set up a comfortable office chair in 25 minutes. For any parts or function issues, we will actively handle it for you.