* Black seat back frame/mesh seat/headrest PA+25% glass fiber
* Ergonomic full mesh chair, up and down adjustment / lumbar support
* Taiwan Yida special net, 3D lifting armrest/PU surface (lifting, rotating, front and rear)
* 25# tube 2.0 thickness tube wall/sleeve 19 tube 1.5 thickness (total thickness of tube wall 3.5)
* Sand-grain gray lacquer bow frame, new gray design patented foot pad, new PP+fiber integral molding, fixed by 304 stainless steel rivets, to avoid hydrochloric acid rust and scratches on tile/wood floors;