PROTECTIVE HELMET

A protective helmet including a helmet shell for at least partially covering the head of a helmet wearer, and a holding strap arrangement arranged on the helmet shell for holding the helmet shell on the head of the helmet wearer. The holding strap arrangement includes a chin strap connected to the helmet shell, a first closure part connected to the helmet shell, and a second closure part connected to the chin strap and can be brought into closed connection with the first closure part, with a closure being formed. The closure automatically opens in a first closed position if a predetermined opening tensile force acts between the closure parts, and the closure parts separate from each other. In a second closed position, the first closure part and the second closure part are always in closed connection with each other irrespective of a tensile force acting between the closure parts.