Each sealed box contains 24 packs of 5 cards each in a 225 card base set including 75 Rookies. >>> Each box contains TWO Rookie cards and FOUR Memorabilia and/or Autograph cards. Parallel sets: Century Proof (Bronze > #`d to 250, Silver > #`d to 100, Gold > #`d to 50, and Platinum > #`d to 25) and Rookie Class Autograph (#`d to 240 or less). Inserts: Threads Jersey, Materials Memorabilia cards (Century Collection, Generations, Century Stars, Century Legends, Dynasty, Rookie Collection Signature, College Greats Signature Combos, and Gridiron Kings (Pro Materials and College Signatures > #`d to 500 or less).