Nice residential grade office chair! Stylish and comfortable, and the smaller scale works well in our home office. Height adjusts easily but the back only flexes, and the arms only lift up  down. Not as sturdy or solid as a commercial office chair, but fine for home use. Assembly was easy, but the screws that attach the back to the seat go into a recessed hole, and it’s hard to tighten with the Allen wrench provided. The long end of the Allen wrench has to go in the hole, leaving the stubby short end to torque — but pliers clamped to the short end can help tighten the screw further.