Middle Ages Great Helm Iron Cross Helmet 10.5" wide Overall Length: Approximately 13.5 Inches Internal Diameter, Front to back: 10.50 Inches Internal Diameter, Side to Side: 8.50 Inches/Eye Slits: 6 x .50 Inch Forehead Circumference: 26.77 Inches Material 18 Gauge Low Carbon Mild Steel/Size: One size fits most