The NV ergonomic chair epitomizes comfort and subtle style - Intelligently engineered to provide lumbar support and encourage good posture, NV ergonomic design may well be the answer to your backs prayers! Inspired by you, designed for you and created with your needs in mind. Unique Curved Backrest for Ergonomic ComfortEasily Adjustable Lumbar SupportAuto Weight BalanceSeat SlideBreathable 3D Mesh BackrestLever Control Mechanism with Weight BalanceRobust Star Base with Easy Glide Castors Assembly required - YesAssembly level - Easy, less than 15 minutesSeat adjustment - YesDetachable seat cover - YesExtra cushioning - YesHeight adjustment - YesMesh