h. All parts of the helm that might come into contact with the wearer’s head shall be padded with
a minimum of ½ inch (13 mm) of resilient or closed-cell foam, or shall be suspended in such a
way as to prevent injurious contact with the wearer. Similarly, parts of the helm, which might
come in contact with the wearer’s neck or body, should be padded.
(from the Armour Standards)
So suspension is okay, but there may be regional variations.
