
1) Army issues 2) Brain buckets 3) Cycling safeguards 4) Football gear 5) Football-uniform items 6) Knight caps
Found on
https://www.crosswordclues.com/clue/helmets

1) Casques
Found on
https://www.crosswordclues.com/clue/helmets

Protection for the head that came in a variety of shapes, offering various degrees of protection. These were usually made of bronze, though occasionally iron was used. The Greeks used a variety of closed helms that left the face open to various degrees. These commonly sported a crest of dyed horsehair, to give the warrior a more imposing air. The t...
Found on
http://www.encyclo.co.uk/local/21596

All crew members must wear helmets with full facemasks that conform to required safety standards and must be available for purchase in sports shops specializing in such gear. No additional aerodynamic alterations are permitted to the helmet.
Found on
https://www.encyclo.co.uk/local/21309
No exact match found.