Leband Ergonomic Adjustable Backrest for Office Chair The lower end is a

The lower end is a 3

It can be used at any angle you like

A Backrest Won iF Award

Double torsion spring design to dynamically buffer and disperse pressure

The ergonomic chair cushion is made of high-quality ABS material

Leband Ergonomic Adjustable Backrest for Office Chair The lower end is aDynamic back support The Leband adjustable ergonomic back cushion dynamically supports the back and relieves the pressure on the spine. The backrest adopts a wrap around design to cater to the natural curvature of the human spine. The backrest will automatically adjust the force direction according to the supine posture, and transmit the pressure of the spine to the supporting backboard, so that you can sit for a long time without getting tired. One