Design They feature padded seats and backrests for comfort during extended periods of sitting, often with high-density foam that retains its shape over time.
Frame The chairs have a sturdy metal frame, typically steel or aluminum, with a powder-coated finish for resistance against scratches and rust.
Stackability A primary feature is their ability to stack efficiently, sometimes up to 10 or 12 high, which saves significant floor space during storage or setup.