Yes, the NFL mandated Guardian Caps for the 2024 season with expanded use. The new mandate includes all practices preseason, regular season, and post season that include contact. They have also added receivers and defensive backs to the list of positions mandated to wear Caps which now include: OL, DL, LB, DB, TE, RB, FB, WR. Read here. Additionally, all NFL players are now permitted to wear Guardian Caps during games for the 2024 season.
In 2017, Guardian won the NFL HeadHealthTECH Challenge. In 2020, the Guardian Cap was seen on multiple NFL teams for practices and after a year of data collection and lab testing that showed a “statistically significant” improvement over bare helmets alone, the NFL permitted Guardian Caps in the 2021 season. In early 2022, the NFL owners announced that the league would mandate the use of Guardian Caps during the early part of training camp for all OL, DL, TEs, and LBs. In 2023, the NFL expanded the mandate of Guardian Caps to include all preseason, regular season, and post season contact practices, while adding RBs and FBs to the list of mandated positions. For the 2024 season, the NFL has once again expanded their mandate by adding receiver and defensive backs to the list of positions mandated to wear Guardian Caps. The mandated position groups now include: OL, DL, LB, DB, TE, RB, FB, WR.