820 soft lumbar support and big headrest luxury leather high back office rolling chair. The unique mesh finish allows you not to fall behind in business negotiations, but also to respond to various emergencies with grace and poise. Application: It can used living room, bedroom. It can be found in offices, schools, shopping malls, training institutions, and even at home. Feature: Aluminum alloy and nylon pad armrest,∮350 metal chromed base, The MECHANISM can be Lifting, tilting,revolving, locking