The product is a 2021 Leaf Metal Draft Top Picks autographed trading card featuring Marcelo Mayer of the Red Sox. This card is part of the Top Picks insert set and is signed by the player. It is a refractor parallel variety card, making it a desirable collectible for baseball fans and card collectors. The autograph is authenticated by Leaf, adding a level of authenticity to the card. This unique and limited edition card is a must-have for fans of the sport and the promising young athlete.