You'll want to go one size up if you're looking for a looser fit or plan on layering under the jersey. Specifics from Nike.
Patrick Mahomes Kansas City Chiefs Nike Away Super Bowl LVII Game Jersey Men's
Eagles will wear home green jerseys, Chiefs will be in white for Super Bowl LVII
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Super Bowl LVII RECAP: Patrick Mahomes inspires Kansas City Chiefs to record-breaking victory - Mirror Online
Kansas City Chiefs Super Bowl Victory Parade scheduled Wednesday
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Every Super Bowl Ranked, From Worst to Best of All Time - Men's Journal
Patrick Mahomes Signed Football