ERGONOMIC BACKREST - Designed with open mesh, Office Chair creates a breathable, well-ventilated backrest. Our ergonomic office chair backrest completely follows the waist and back curve. It provides comfy lumbar support which helps you keep in the right position during long time working. BREATHABLE SEAT- The breathable mesh material on this swivel desk chair keeps your back and leg cool and comfortable. This design will promote air circulation, allowing you to sit cozily for long hours. Padding Seat made of thick sponge and breathable mesh material, our computer desk chair seat is soft and resilient, thus it is perfect to prevent body heat and keep your hip and legs sweat-free during working study or gaming.