Featuring reliable ergonomic support, the two plastic lumbar support design behind the backrest provides an extra comfortable experience for long periods of sitting. Updated thick pad, soft texture slow down the pressure of the sedentary. Breathable, lightweight mesh use Nanoscale materials can resist transformation, abrasion. More reliable and sturdy. 360-degree swivel, heavy-duty nylon base, and nylon smooth-rolling casters for great stability and mobility.