Seen around the 4th Century A.D. under Constantine, this helmet design was composed of 4 component pieces. The top of the helmet (cap), an attached nasal face strip and 2 side check/facial plates. These Roman helmets were the direct link to the popular Medieval Nasal Helmets of the early Middle Ages. As an innovation, many of the Ridge Helmets had leather strapping with buckles inside (not seen in early Medieval models). Some versions were highly decorated (as in the Constantine Era). These helmets were popular among cavalry troops. Many variations of the Ridge Helmets were produced (again depending on where within The Empire they were made).