“Try to create 90-degree angles at the waist and knees,” recommends ... which I attribute to the chair’s back support, which encourages a more upright posture. It has adjustable lumbar ...

The HBADA E3’s three-zone elastic lumbar support focuses on alleviating and preventing lower back pain ... down as your lower waist. The HBADA E3 Ergonomic Office Chair is the culmination ...