Each sealed box contains 18 packs of 4 cards each in a 100 card base set (90 debut and true Rookie cards) including 10 Top Pick Rookies (#`d to 1000). >>> Each box contains at least ONE Game Used Bat card. Inserts: Heroes of Baseball Bat cards 1:18 (Autographed version > #`d to 25), MJ Grandslam Bat cards, Heroes of Baseball Game Worn Jersey cards (Dual Combo 1:144, Autographed version > #`d to 25 and Triple Combo 1:144, Autographed version > #`d to 25) and Jackie Robinson \Tribute to #42\" 1:750 (Game Used Bat cards, Game Worn Jersey cards, Cut Signature cards, Game Used Bat/Cut Signature cards, Golden Game Used Bat cards > #`d to 42, and Golden Game Used Jersey cards > #`d to 42)."""