These sleeves are used to 'double sleeve' cards for added protection.
Card sleeves protect cards from dirt, gunk and moisture. High quality card sleeves from KMC, card sleeve manufacturer in Japan, the sleeves to protect
KMC 100 Pochettes Card Barrier Perfect Size Soft Sleeves, 3 Pack/Total 300 Pochettes [Komainu-Dou Original Package], Clear
KMC Sleeves Perfect Sized Full Sized Black (80) : Toys & Games
KMC KMCPS0273 Deck Protectros Perfect Fit for sale online
EVORETRO 400 Card Sleeves for Trading Cards - Clear Card Sleeves for Yugi-Oh, Snug Fit Compatible with Pokemon Card Sleeves, and Inner SL
100PCS/Lot Acid Free Transparent Perfect Size Fit Cards Sleeve Deck Protector Similar for MGTagical/PKM/STAR REALMS64.5x89mm - AliExpress
MTG - What are the best INNER Perfect Fit sleeves for DOUBLE-SLEEVING? Magic: The Gathering
KMC Supplies Sleeves Hard Collectible Cards for sale online
KMC Sleeves KMC Perfect Size Inner Sleeves €“ Mini Size 100 Sleeves Per Pack - 2 Packs : Toys & Games
KMC 100 Card Barrier PERFECT SIZE Newest Version (10 packs/Total 1000) : Toys & Games