The product is a lot of 4 factory sealed rack packs from the 1987 Topps baseball trading card set. These packs are sealed by the manufacturer, Topps, and contain cards from the 1987 season. It is possible that these packs may contain rookie cards of famous players like Bo Jackson and Barry Bonds. Each pack offers a chance for collectors to potentially uncover valuable and sought-after cards from the 1987 baseball season.