Ergonomic Design of Thunder Air Gaming chair makes it the best option for Gaming, working, and studying Multi-Purpose adjustable 180 degree Backrest & adjustable 4D armrest provides the long lasting comfort of working It’s 360 degree swivel round base gives the convenience of customizability and position change Imported Quality PU Leather, Ultra-density sponge (most comfortable & convenient), Mute PU Wheels makes in highly durable & innovative Explosion proof powerful security gas springs of imported quality, heavy duty base with castor steels makes it best structure for all spaces.