NFL exec suggests Guardian Caps worn to protect players during practices could one day debut in games

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Guardian Caps, which are soft-shell helmet covers, became a mandatory part of linemen and linebacker's uniforms during last season's NFL training camp.

When training camps across the league began opening this year, running backs started wearing the protective helmet during the preseason and throughout regular season practices whenever players are making full contact.

During a recent appearance on "Good Morning Football," Jeff Miller, NFL executive vice president who oversees player health and safety, suggested that the Guardian Caps could debut in actual games in the near future.

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Guardian Caps are padded soft shells that are placed over football helmets and are typically used during NFL training camp practice sessions. (Kirby Lee-USA TODAY Sports)

"I think the day could come," Miller said. "But at the same time, a lot of the helmets are also making advances, too, and so some of the protective benefits you get from the Guardian Cap hopefully will be seen in helmets in the next year or two."

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Football helmets are typically made up of polycarbonate, which is a durable plastic. Meanwhile, the padding on Guardian Caps is believed to decrease the impact to a helmet's hard exterior.

According to data provided by the NFL, the Guardian Caps decreased concussions by approximately 52 last year. Miller did mention on "Good Morning Football" that the league was told about some issues with the caps, including some concerns about the overall fit of the caps.

This view shows Cleveland Browns helmets with