An ergonomic office chair with a proper five-point base provides genuine stability and safety during use. A five-point base means five wheels which distributes your weight evenly and prevents tipping. This is a non-negotiable safety feature not a design preference. Budget chairs sometimes use three or four point bases which compromise stability. The wheelbase distance matters too because a wider base feels more stable during movement. Quality casters roll smoothly across different floor types without stuttering or catching. The base should feel solid and substantial when you move in the chair. Stability becomes important when you lean and shift your weight. A wobbling base creates tension and anxiety. A solid base means you trust the chair completely. This is a foundational ergonomic feature that prevents injury.