The Topps 2025-26 Cooper Flagg Big Box Ballers BB-1 Rookie card features basketball player Cooper Flagg from the Dallas Mavericks. This original sports trading card is part of the Big Box Ballers insert set, manufactured by Topps for the 2025-26 NBA season. Made of card stock, this collectible item is in near mint condition or better, making it a valuable addition to any basketball card collection.