The product is a 2017-18 Panini Cornerstones trading card featuring an autograph from Jayson Tatum, a rookie player for the Boston Celtics in the NBA. This card is from the Keystone Signatures insert set, with a hard-signed autograph and a grade of 10 from Professional Sports Authenticator (PSA). It is a limited edition card, with only 99 copies produced, making it a valuable and sought-after collectible for basketball fans and card collectors alike.