[Leather Seat]: Leather wrapped, waterproof and oil-proof, easy to clean, wear-resistant, each seat is filled with high-elastic sponge, soft, breathable and comfortable [The backrest can be adjusted backward]: The backrest can be adjusted to the backward angle through the knob on the bottom of the chair, which can relax your body when you are tired from work. [Aluminum alloy tripod]: The chair tripod is made of aluminum alloy, which has strong bending resistance and is stable and load-bearing. Resistant to deformation and corrosion, the oxide layer is not easy to fade or fall off. It provides comfortable support which helps you to maintain a relaxed posture in a long hours of work, t is easier to disperse pressure and relieve muscle fatigue. [Modern & easy assembly]: The ergonomic backrest and elegant tailoring design make the modern chair not only stylish but also comfortable. Installation of the chair is very simple.All the accessories and instructions are included. No extra tools are required. It only takes about 15 minutes to finish the simple installation.