DXRacer Iron Series DOH/IS03/N Newedge Edition office chair X large PC gaming chair computer chair executive chair ergonomic rocker (Black) Quality and Security All the accessories have passed 72 strict quality tests. Imported Hydraulic unit The hydraulic unit is imported from Germany and passes stringent SGS and exceeds International standards. Adjustable system The height and angle of the chair can be adjusted to any degree. Full-size frame The DXRACER chair has a full size frame inside. We adhere to strict quality controls to bring you the ultimate in comfort. Footrest-shaped base Our new base has been designed by a team of specialized professionals to last indefinitely. It can support a ton in weight.