Demaryius Thomas Signed Denver Broncos Nike Alpha Size 10.5 Cleat JSA 37965 The number in the listing title is just an inventory sku for our records and is not the authentication number. This is the exact item that you will receive so please see pictures for condition. This is a Nike Alpha size 10.5 cleat that was personally autographed by Demaryius Thomas. Includes a certificate of authenticity from James Spence Authentication (JSA) and Denver Autographs.