PACKAGE AND CARD SIZE10 Packs Protector Card set.Outer Dimensions (12x11cm / 4.7x4.3in) Inner Dimensions (7.5x11cm / 4.3x3.0in.).Suitable card size is 4" x 3". EASY TO CARRYSuitable for the protection and carrying of ID cards,convenient and quick access to safe passages,name recognition in school activities,business meetings,trade shows, conferences,festivals,airlines,etc. WATERPROOF AND DUSTPROOFEasily open and close with the excellent resealable ziplock closure.This waterproof and dustproof card protector is great to keep your important paper badges or cards dry,clean and secure. REUSABLEDurable PVC poly vinyl chloride material,wear resistant and corrosion-resistant properties.Clear card pouch is made of flexible,very suitable for long-term use.Perfect badge holder for ID cards,work card,student cards,nurse name card,credit cards, membership card,exhibition card,bus pass,etc. A GOOD CHOICEIf you are worried that your card would get damaged in your pocket and trying to store your card carefully like passports,because some institutions/organizations have requirements to see cards, these clear card protector would be a good solution