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Vicis high-tech helmets take top 3 spots in NFL's annual performance ranking of equipment – GeekWire
How football helmets fail to protect against some of the most dangerous hits in the game - The Verge
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Took a minor fall right onto my helmeted head on Sunday (no concussion). Was only going about 6 mph but flipped over handlebars and landed right on helmet on concrete. Helmet has
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