Topps Pro Debut Baseball returns in 2017 as the most comprehensive Minor League Baseball trading card release of the season. Compelling thematics such as In the Wings, an insert subset devoted entirely to the  brightest young stars of Minor League Baseball, have been added this year to drive interest and collectability. Also look for specially inserted Promo Night Uniform Relic cards featuring jumbo-sized pieces of game-used promotional themed jerseys! 8 cards per pack, 24 packs per box.