The Flat Top or Bucket helmet is the typical knight helmet throughout the High Middle Ages. Appearing in its earliest forms from the middle of the 12th century it developed from a helmet with a rather broad nasal to a face plate helmet and then on to the Great Helm by the beginning of the 14th century.
Its use was limited to mounted combat because visibility, hearing and ventilation were reduced to offer maximum protection. With the development of the Bacinet this kind of helmet disappeared from the battlefield but was longer in use for tournaments.
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