The product is a 2021 Mosaic #313 Najee Harris Reactive Yellow Rookie Trading Card graded PSA 10, featuring a population of 32. This sports trading card is from the National Football League (NFL) and part of the 2021 Panini Mosaic set. The card showcases Najee Harris, a player for the Pittsburgh Steelers and Los Angeles Chargers, making it a valuable collectible for football fans and trading card enthusiasts alike.