Seen in the 15th Century, the Frog Mouth helmet was part of the Great Helm classification of protective wear. Designed more for tournament used than actual combat. The helmet was shaped to slope forward into a wider, flatter front. Hence, it resembled the face or mouth of a frog. A gap between the top and movable visor gave the wear fair vision when looking forward. A cowl or related protective neck covering was a required component. The helmet was designed to incorporate the tournament technique that required the rider to keep his head down somewhat - but still to keep one's eye on the target.