What is frogmouth helm?

As an AI language model, I do not have any specific information on "frogmouth helm" as it can mean different things in various contexts. However, assuming you are referring to the type of helmet used in medieval times, I can provide some facts:

Frogmouth helms were a type of medieval helmet that was popular in the 14th and 15th centuries. They were characterized by their unique shape, which resembled the open mouth of a frog. The helmet was designed to provide good visibility and protection to the face and neck. The main features of a frogmouth helm included a pointed, reinforced nasal guard that extended to the forehead, a hinged visor, and a sharp downward curving plate at the front. It also had a comfortable leather padding inside to absorb shock and provide comfort.

The frogmouth helm was worn by knights and other soldiers and was commonly used in jousting and other combat sports. The design of the helmet provided both protection and visibility, making it a popular choice among warriors. However, the pointed nasal guard and hinged visor made it vulnerable to attacks, so it fell out of use by the end of the 15th century. Today, frogmouth helms can be seen in museums, reenactments and as part of medieval armory.