These sleeves fit perfectly into Ultimate Guard Sleeves (sleeve in sleeve). Perfect for Yu-Gi-Oh!, Naruto and many other japanese sized cards. 100 sleeves per pack. Additional protection Interior card sleeves. Fit perfectly into ULTIMATE GUARD sleeves for maximum "sleeve in sleeve"-protection. Extra clear polypropyleneMade of high-quality polypropylene, the industry standard for clearness and usability of card sleeves. Consistent sizingReliable size consistency from sleeve to sleeve and from pack to pack. Acid free, no PVC This product is completely free of PVC and acidic materials and therefore ideal for collectible cards. Precision card fit High-precision manufacturing process to ensure accurate results for your cards' "second skin".