The N.F.L.'s Favorite Helmet Maker Is in Financial Trouble - The New York Times
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NFL helmet safety testing results: Vicis ranks first again for its high-tech head protector – GeekWire
NFL To Introduce New Football Helmets - Big Blue View
NFL looking to introduce new football helmets - Dawgs By Nature
Northwest football getting helmet improvements, Sports
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TPU (thermoplastic urethane) Cushioning – the most advanced impact absorption system in football – absorbs more impact across a wider variety of
Schutt F7 VTD Collegiate Youth Football Helmet, Football Accessories, Facemask NOT Included
The Safest Football Helmet Is Not Yet a Hit in the NFL - WSJ
Future of football safety could come down to research in Riddell's suburban Chicago office
Making Football Safer: Assessing the Current National Football League Policy on the Type of Helmets Allowed on the Playing Field
Used Schutt 2017 Vengeance A3 Md Football Helmets
Style vs safety: Do too many football helmets pose a risk?