The product is a lot of 10 1990 Pro Set trading cards featuring Barry Sanders, who was named Rookie of the Year in the National Football League (NFL) that same year. These cards are highly collectible due to the association with a legendary player like Sanders and are a valuable addition to any football card collection. The cards are from the 1990 season and manufactured by Pro Set, adding to their authenticity and appeal to fans of both football and trading card collecting.