Reduces impact up to 33% One size fits all Insulates in hot & cold weather Fits both football and lacrosse helmets Connects to the facemask with 4
Guardian Protective Helmet Cover
Guardian Cap - Soft-Shell Protective Helmet Cover : Football Helmets : Sports & Outdoors
What Pros Wear: Top 5 Helmets Rated by the NFL & NFLPA - What Pros Wear
New tests for helmets: Safety standards may be raised to make sports safer
New Smart Helmet Could Spot Concussions in Real Time
Find out how modern football helmets attempt to limit brain injuries
NFL's use of Guardian padded helmet caps in camp draws support and skepticism - The Athletic
Are Full-Face Motorcycle Helmets Safer? The Brutal Truth About the 4 Types of Helmets - AGVSPORT
Riddell's Axiom could be breakthrough helmet for football
3 Ingenious innovations from the NFL's Helmet Challenge
How Helmets Have Evolved to Prevent Football Concussions - Chester County Hospital
Wearing headgear for sport does not protect against concussion, Australian experts warn, Concussion in sport