Helmets like this occurred around the 15th century in the Christian countries. The visor provided protection and did not hinder the peripheral view of the wearer. Standard Adult Size fully wearable.

Specifications:
Approx Circumference: 25.5 inches
Inclusions: Leather liner with chin strap
Material : 14 Gauge Steel

Note: **
Please use Helmet cotton cap (inner) for comfortable wearing. 
Use Helmet Stand for the good protection of helmet.
The Helmet comes pre oiled for protection from rust. 
Please use dry cloth to clean OR keep it under the Sun for a day for the excess oil to dry out.