NFL CMO Dr. Allen Sills explains importance of mandated guardian caps during training camp
Guardian Caps - Are the soft-shelled football helmet covers effective at limiting head injuries? - ESPN
What are Guardian caps? See the NFL's latest head protection device - Deseret News
What Pros Wear: Guardian Caps What are Those Helmet Covers Being Worn in Practice? - What Pros Wear
Funky-Looking Guardian Caps Rejected by NFL for Regulation Play, OK'd for Practice - Core77
UGA football outfits players in Guardian Caps to try to reduce impacts.
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)
Football Guardian Caps XT (Current Model) – Guardian 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)
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)
Guardian Caps Guardian Sports
Guardian Cap - Features & Benefits
Tony Plagman on LinkedIn: NFL mandates special helmets for start of camp
Football Guardian Caps XT
What are Guardian Caps? NFL's latest padded helmets for added safety