The product is a lot of 39 2025 Topps Chrome Update Boston Red Sox trading cards featuring players like Mayer and Campbell. These standard-sized baseball cards are made of card stock and are original licensed reprints by Topps. The cards are from the Topps Chrome set and include a rookie card. The cards are in English and are authenticated by Topps for autographs. This lot of cards would be a great addition for fans of the Boston Red Sox and collectors of Major League Baseball memorabilia.