This autographed Riddell Flash Alternate Speed mini helmet has been personally hand-signed by Ricky Williams of the Miami Dolphins. Williams added the inscription "Puff, Puff, Run" along with his signature. This autograph is certified by PSA/DNA's (Professional Sports Authenticators) In The Presence authentication. That means that a PSA representative was present when this item was signed. It comes with the PSA numbered hologram and matching Certificate of Authenticity.