Guardian caps are soft 12 ounce protective helmet covers that the NFL authorized players to wear in games this season in an effort to reduce head injuries NFL Studies have shown that when one player wears the protective gear it results in a 10% reduction in severity of impact Miami quarterback Tu Tonga vioa has said he doesn’t plan to wear it when he returns from his latest concussion Tua already wears a quarterback specific helmet that’s tested best for safety according to study by the NFL and the NFL players Association the NFL began mandating use of the Caps during all contact practices for certain position groups in 2022 that mandate was expanded to include all positions except quarterback punter and kicker this season there are six types of helmets the league has approved that if Warren would not require a player to wear a guardan cap in contact practice