The Topps 2026 NBA Hoops Rookie Insert Cooper Flagg Block by Block BYB-1 features a standard size card made of card stock, representing the National Basketball Association (NBA) league. As part of the 2026 Topps NBA Hoops set, this original sports trading card showcases Cooper Flagg from the Dallas Mavericks team. The insert set "Block by Block" adds a unique touch to this English-language card, making it a desirable collectible for basketball fans and trading card enthusiasts.