A five-star base consists of five arms extending from a central hub. It is commonly used in office and ergonomic chairs because the five-point configuration provides a broad and stable support footprint.
The base may be manufactured from materials such as reinforced nylon, aluminium or other engineered materials. The choice of material affects appearance, weight, durability and load-bearing performance.
Casters are normally fitted at the end of each arm to allow the chair to move across the floor.