The sleeves that come with this campaign (if you ordered them) are great. They fit snugly to allow for the focus sleeves to be used as intended. HOWEVER, I am a returning backer who purchased sleeves as part of the previous campaign (Deck of Worlds). Those sleeves are slightly larger (by millimeters) and do not work with the focus sleeves. It's great the sleeves have been retooled so they can be used with the focus sleeves! But this also means folks like me will have to repurchase and resleeve the entirety of their collection. Personally, I wish this has been communicated during the this campaign so the small margin of people in my circumstance could plan appropriately. Now, I have to order more sleeves from the webstore and wait for them to arrive so I can make the rest of my collection usable with the focus sleeves. I can only hope when I order the new sleeves they are from the new batch and not the old.