The product is a 6-card lot of William Contreras rookie cards from the 2021 Bowman Chrome set by Topps. These baseball trading cards feature the player from the Atlanta Braves and are part of the Major League Baseball (MLB) league. The cards are from the base set and include the rookie designation, making them a valuable addition to any sports card collection. Each card is numbered 38 in the set and showcases the rising star in the 2021 season.