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✦ customer Q&A
Got a question?
Absolutely! Our stickers adhere well to the sleeve surface and leave little-to-no residue when removed.
For Galaxy and Palette sleeves, the coloured backs aren't designed to be decorated, stick to the clear side!
Yes! All Kkumi sleeves are 100% CPP (cast polypropylene), PVC-free, acid-free, and archival-safe.
Double-sleeving is using a smaller "inner" sleeve and then putting that inside a slightly larger "outer" sleeve.
You can learn more about double-sleeving and everything else about sleeves in our Sleeve Guide →
Yes, just make sure you're sleeving correctly! To protect against dust and liquids or moisture, the best thing you can do is double-sleeve your cards with the openings facing opposite directions.
No. Yellowing and card damage is caused by soft PVC sleeves, which release chemicals over time. Our sleeves are 100% chemically inert CPP, which means there's 0 PVC, 0 acid, and 0 damage to your cards.