Leonidas is notable for his leadership at the Battle of Thermopylae and led his band of 300 Spartans along with the combined Greek forces determined to resist the Persian Invasion in 481 BC. Authentic style Spartan helmet is made from 18 gauge solid steel in a brass antique style with an inner depth front to back of 9 inches. It is 8 inches wide 18 inches tall circumference of 26.6 inches. 2.2 lbs.