What are those helmet pads Chicago Bears offensive linemen have been wearing at practices?
Chicago Bears Riddell Speed Authentic Helmet - 1962-1973 Throwback
Real Stuff Sports Game Used Football Helmets
Riddell Chicago Bears Speed Authentic Helmet
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Photos: Why the Chicago Bears wear padded helmets
Photos: Why the Chicago Bears wear padded helmets
LeSean McCoy criticizes Justin Fields, not the Bears – NBC Sports Chicago