These game-used cleats were worn and personally hand-signed by Tim Tebow between the 2016-2019 MiLB seasons. The were obtained under the auspices of the Major League Baseball Authentication Program and can be verified by its numbered hologram at MLB.com. They also come with a hologram from Fanatics Authentic and a certificate of authenticity. To ensure authenticity, the hologram can be reviewed online. This process helps to ensure that the product purchased is authentic and eliminates any possibility of duplication or fraud.