NFL makes Guardian Caps mandatory for many positions through second preseason game - NBC Sports
As NFL mandates Guardian caps in practice, area high school football teams have been using them for years, Sports
Guardian Shipping & Return Policy Description*The NFL Guardian Cap NXT version is ONLY for NFL athletes and college linemen and can be ordered through
Football Guardian Caps NXT (NFL Model)
NFL hopes to reduce head injuries with helmet experiment
NFL's use of Guardian padded helmet caps in camp draws support and skepticism - The Athletic
NFL executive hints that Guardian Caps could eventually be worn in games, along with position-specific helmets
Guardian Caps helping Bills, other NFL teams reduce impacts in practice
What Pros Wear: Guardian Caps What are Those Helmet Covers Being Worn in Practice? - What Pros Wear
Guardian Caps Guardian Sports
Guardian Caps Get Good Reviews From NFL Training Camps - Team Insight