Soft Padded Seat: The backrest and seat are padded with high elastic foam and covered with soft PU leather, which is specially made for your all-day comfort and support. 360° Swivel: 5pcs heavy-duty 360° swivel plastic casters for smooth, easy and quiet rolling around your workspace and prevent your floor from scratches; rotatable seat is convenient for you to fetch things and for multi-tasking. Smooth Adjustment: Seat height can be adjusted from 41.5cm/16.3’’ to 56.5cm/22.2’’ by simply lifting the lever. SGS BIFMA standard pneumatic gas mechanism lift allows for easy height adjustments. Easy to Assemble: Simple assembly is required. All parts, hardware and tools are provided for your convenience. Follow the detailed instructions and you will have the desk chair ready very quickly.