Experience the pinnacle of comfort and support with ISISU. Being at the forefront of the office chair industry, ISISU offers the best of the best in ergonomic design with state of the art adjustment features. Furthermore, the full mesh design is not only durable but offers the best in comfort with its breathability, letting you sit comfortably for long hours. The ultimate blend of stylish design and ergonomic functionality. Features: Sophisticated design - Full mesh upholster design that offers the best of breathability, durability and style. Ergonomics that matter - Ergonomic adjustable back that offers ample support to your back and lumbar. Ahead of the competition - 4D adjustable headrest that conforms to your neck no matter the angle. Lean back and relax - Adjustable recline functionwith tension adjustments. Arm yourself with the finest - Adjustable 3D arms allowing for height and angle adjustment. Stability you can trust - Sturdy and wide base that keeps you stable in all seating positions. Glide with ease - Free rolling Nylon castors that glide with ease but keep you stable when needed. Specifications: Height and angle adjustable 4D headrest Adjustable chair mechanism Height adjustable back support Multi-adjustable arm rests 700mm diameter nylon base 50mm nylon castors Seat height: 480mm-580mm height adjustable Chair height: 1350mm-1450mm Can support weights up to 160kg 2 Year warranty (Excluding wear and tear of the fabric/mesh) Requires easy assembly, with all tools provided. What's in the box 1 x Operational Manual/Assembly Instruction 1 x Headrest 1 x Backrest 1 x Seat 1 x Chair Mechanism 1 x Set Adjustable Arms 1 x Pneumatic Height Adjustable linear Cylinder 1 x Base with Castors 1 x Set of Fasteners and assembly tools