Each KeyForge Deck and card is unique and deserves an extra layer of protection. These sleeves add this kind of additional protection. These are used inside regular sleeves (sleeve in sleeve) to protect cards from dust, dirt or other damages from e.g. frequent shuffling. KeyForge INNER SLEEVES are optimized in size for KeyForge cards, which is unique in the market right now. Other inner sleeves from other manufacturers are too small for KeyForge cards. 40 Sleeves per pack.