Regular batons differ from expandable ones in one slight detail - unlike expandable batons, they cannot be expanded or retracted. Modern expandable batons are made from extra durable materials and come in various sizes like 16“ (40.6 cm), 21“ (53.3 cm) or 26“ (66 cm), today they set the standard in self-defence for both professionals (military, law enforcement, etc.) as well as civilians (private security in stores are for example considered regular civilians by the law).