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