Experience optimal comfort and adjustability with the ZOY HB BLACK chair. Featuring a 3D armrest adjustment system and Gel PU padding, this chair is designed for superior ergonomic support. Make slight and quick backrest adjustments with the tension mechanism, and adjust for the perfect fit with the adjustable seat height and seat slide. This chair is designed with heavy duty mesh on the back for durability and a glass filled grey nylon backrest and seat with molded foam for cushion. Lastly, the chrome base and nylon castors provide stability and mobility.