 Helmets made entirely of bronze were also used , while some of them had large cheek guards , probably stitched or riveted to the helmet , as well as an upper pierced knot to hold a crest . Small holes all around the cheek guards and the helmet 's lower edge were used for the attachment of internal padding . Other types of bronze helmets were also used . During the late Mycenaean period , additional types were also used such as horned helmets made of strips of leather . 
