The product is a 2023 Topps Chrome Authentics Relics Zack Greinke trading card featuring a Green Refractor parallel numbered 56/99. This baseball collectible is part of the Topps Chrome series from the MLB, showcasing the player Zack Greinke from the Kansas City Royals. The card is made of card stock and includes a piece of memorabilia from the player, making it a sought-after item for collectors. This original sports trading card is a valuable addition to any baseball card collection, with its limited print run and unique features.