● Card Protectors (i.e. Sleeves) whose motif is the Logo Mark of “Kaiba Corporation” led by Seto Kaiba from the original Yu-Gi-Oh!
● There are 55 Protectors, so it’s the perfect number for Deck Construction *
● Store your important cards in theme, or they’re also perfect for protecting your cards when you actually play.

* Their words, not ours.

Source: 2ch, Maxut, etc.