The 2025 Topps Chrome Update Series Mega Box contains 42 baseball trading cards from Major League Baseball (MLB). These standard-sized cards are made of card stock and are brand new, sealed in the box. Manufactured by Topps in the United States, this set features cards from the 2025 season, showcasing players from the MLB. With no autographed cards included, this collection is perfect for fans looking to collect and trade baseball cards featuring top players from the league.