Breathable & Comfortable: Breathable high density strength mesh material allows air to circulate, prevent body heat and moisture build up. Keeping you cool and comfortable throughout the day Ergonomic Design: Ergonomic lumbar support hugs your lower back and enhances the natural curve of your spine. The pneumatic adjustment lever will allow you to easily adjust the seat to your desired height. Adjustable tilt tension, greatly help to eliminates leg fatigue Adjustable Height & 360° Swivel: Adjustable back height and headrest with reclining option, which makes the user more comfortable during work hours. Dual-wheel PU casters support 360° Swivel freely and move very easily Easy to Install: The instructions are very easy to follow, you just need to count a few screws and bolts, you can assemble it. And easy to be washed