The 2021 Topps Series 1 Baseball Target Exclusive Factory Sealed Mega Box contains 256 standard-sized trading cards featuring players from the Major League Baseball (MLB). These cards are manufactured by Topps in the United States and come in a factory-sealed box, making them a sought-after collectible for baseball fans and card enthusiasts. The set includes exclusive cards from the 2021 Topps series, showcasing MLB players in the current season. With no autographs included, this product is perfect for fans looking to build their collection of baseball trading cards.