The 2026 Topps Series 1 Complete Base Set & Complete STARS of The MLB trading card set contains a total of 380 cards made of card stock. This original set features players from Major League Baseball, including Shohei Ohtani, and is part of the MLB World Series event. The cards are in standard size and are manufactured by Topps in the United States. The set includes cards from various teams like the Atlanta Braves, Los Angeles Dodgers, and Baltimore Orioles, making it a comprehensive collection for baseball fans and collectors alike.