Built-in lumbar support is ergonomically designed to provide amazing spinal support and help relieve the pressure on your lumbar spine. The backrest can be locked in any position between 90° and 135° to avoid falling backwards. 4D adjustable armrests provide gentle support for your forearms and elbows, which are durable, and easy to clean.
Foam type High density mold shaping foam Armrests 4-directional Frame construction Steel Tilt function Full tilt Tilt angle lock Yes Hydraulics gas piston Class 4