SAMOFU Home Office Chair, Ergonomic Desk Chair with Leather and Mesh Seat, High Back Computer Chair with Flip-up Armrest… Price: $34.49 (as of 11/26/2022 20:30 PST- Details)

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[Relieve Back Pain] Mimic the healthful standing position that is helpful for your body. There is lumbar support in the lower part of the back that curves forward slightly to match the natural curve in your lumbar spine, thus effectively decrease the pressure of the back, provide natural balance and total support.
[Get Optimal Comfort] Adjust the lumbar support to fit your low back, helping the spine retain some of its natural curves when seated, and alleviating stress to the vertebrae. And, you should look for a chair with at least 3.9″ adjustable seat height, to ensures better comfort for you, avoid pressure buildup and numbness in the legs. The backrest can rock freely between 90-115 degrees.