Virginia Tech lab releases first safety ratings for youth football helmets
Guardian Caps: NFL requires use of helmet cover at training camps
NFL players wear Guardian Caps to reduce head trauma during
What are those caps football players are wearing?
NFL Presents: League-wide Guardian Cap Use to Reduce Head Impacts
The Complete Beginners Guide To American Football – vIQtory Sports
NFL CMO Dr. Allen Sills explains importance of mandated guardian
How New Helmet Technology Will Make the NFL and NHL Safer
Complaints begin regarding Guardian Caps, despite one important