Purchased from fanatics, The 2025 Topps Holiday Mega Box MLB Trading Cards Mega Box is a sealed baseball card collection featuring players like Fernando Tatís Jr., Shohei Ohtani, and Mike Trout. This box contains 100 standard-sized cards made of card stock, with each card representing a player from the Major League Baseball (MLB). The set includes limited edition, rookie, parallel, and insert cards, making it a must-have for any baseball card collector. Each box is manufactured by Topps in the United States and offers a unique selection of cards for fans of the sport.