The product is a 2025 Topps Chrome SEPIA #1-300 baseball trading card set featuring players from Major League Baseball. This set includes rookie cards and various parallel/variety cards, all manufactured by Topps. The English language cards have a 35 Pt. thickness and are part of the MLB World Series event/tournament. With a standard card size and being a complete base set, this product offers collectors the opportunity to complete their collection by buying more cards and saving on their purchases.