Custom on-field style jersey. Everything is sewn on, size XL. Hand-signed in blue felt-tip pen by Kevin Boss (Raiders, Chiefs) The Gridiron Legends hand signed item accompanied by this Certificate of Authenticity has been affixed with a unique serial numbered tamper-proof hologram. Any alterations of this hologram deem the authenticity of this item null and void. The autograph on this item was witnessed in person by a Gridiron Legends representative.Authentication: Gridiron Legends COA