This chair has combined a mesh & artificial leather cover, which breathable mesh allows the air to pass through, synthetic leather is both easy to clean and long-wearing. 360-degree Swivel Chair: 5 durable nylon swivel casters under the chair base allow this chair to have smooth mobility from any angle. Users can relax their arms on the soft padded armrests while they are working, gaming, and studying. Adjustable gaming chair. A racing-style chair that provides quality support and comfort. Seat height can be adjusted within 44.5-54.5cm/17.5-21.5’’ high according to the individual’s preference. Users can choose to tighten or release the tilt tension while rocking back and forth with the controlling knob beneath the seat. Durable Executive Chair: This chair is built in a sturdy metal frame padded with high-density sponge and covered with premium artificial leather, featuring a firm finishing touch. The chair surface is water-proof, fade-resistant easy to clean, convenient, and built to last. Ergonomic Office Chair: The wavy ergonomic design fits in individuals’ back curvature just fine. This chair comes with back support, lumbar support, headrest, and armrests, which focus on relaxing users’ muscular tension and improving their sitting experience. Mesh & Leather Mixed Design: The mesh cover in the middle of the back and seat is elastic and breathable, upgrading both the appearance and comfort of this chair. High elasticity provides better support to your back and lumbar, changing curves to fit in an individual’s back. Back tilt tension is easy to control, customer can choose to tighten or release the tilt tension by turning the knob beneath the seat while rocking back and forth.