The 2007 Upper Deck Baseball Series One Fat Pack contains 32 cards, including 2 exclusive inserts featuring players like Cal Ripken, Jr. and Derek Jeter. This pack is part of the Series 1 set by Upper Deck, focused on Major League Baseball. Each pack is made of card stock and includes standard-sized cards with a focus on star players like Chase Utley. Perfect for collectors looking to add to their baseball trading card collection, this pack offers a variety of cards with a mix of base set, exclusive, and checklist features.