A standard spun bowl or conical with nasal bar of 1.5 mm steel. The rim of the helmet must cover down to the eyebrows across the helmet front and cover the top 1cm of the ears at the sides.
If a standard spun bowl is not used, then the helmet crown must be built from 1.0mm steel (minimum) or suitable equivalent.
The nose must have some form of nasal bar or equivalent protection from a face shield/face plate. The protection must extend below the tip of the nose when worn with appropriate padding in the helmet. The nasal must be able to resist bending by hand.
All additions to helmets for purposes of coverage must be made of 1.0mm steel (minimum). If alternative metals are used, they must be strong enough to resist easy bending by hand. At least 1.5mm (minimum) is recommended for Bronze, Brass or Copper used as structure of the helmet.
Decorations may be in any gauge of metal. Leather and other alternatives may also be used for decoration. All sharp points must be secured on the helmet so that they cannot injure anyone.
Helmets with face guards (eg. Viking spectacle) rather than nasals must be of minimum 1.0mm steel, with the nasal area at least 1.5mm thick. Multiple layers that build up to 1.5mm or thicker are acceptable.
All helmets must have a leather or equivalent chin strap. This strap must be capable of holding the helmet on the head in case of the fighter falling over or being up-ended in battle.
All helmets must have padding around the crown and across the brow and temples. This padding should be of at least 10mm sheepskin, felt or approved equivalent.
Gloves and Helmets must be worn at all times during standard combat.
Remember that all new equipment must be cleared by a Marshall before it can be used on the field. In all cases, marshals should be contacted to discuss any unclear points before making any helmets.