Brass Trim Italo-Norman Medieval HelmetThe Great Helm became the mainstay of the medieval fighting man and lasted for about 300 years. Sometimes worn over a smaller helmet and mail, this beautiful helmet with its menacing, narrow eye slits were a strong, tough steel helmet fully capable of absorbing the shock of combat. The Brass Trim Great Helmet makes a stunning addition to the Armour set of any knight. Measurements Inner Diameter : Front to back 9" Ear to Ear : 8" Circumstances : 26.