Guardian Cap debuts during minicamps in effort to reduce avoidable head contact
Minicamp News and Notes for All 32 Teams - by Nick Mensio
First QB helmet designed to help reduce concussions approved - Newsday
Arizona Cardinals QB Kyler Murray shows up for first time at voluntary OTAs
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2014 NFL season preview -- analysis, game-by-game predictions, more for every team
Arizona Cardinals QB Kyler Murray shows up for first time at voluntary OTAs
What We Witnessed At Tuesday's OTA
Viking Ocular Helm with Chainmail Camail - 16 Gauge Steel
Vikings Introduce Soft-Padded Helmets for Parts of OTA Practices
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Vicis expands helmet line with new soft 'cap' for practices, 7-on-7 and flag football – GeekWire
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NFL exec suggests Guardian Caps worn to protect players during practices could one day debut in games