Product Feature DIY-Own your unique vaccine card holder, you can add any decal you like on the cover then you got your unique vaccination card case! Safe- Rfid blocking can prevent your data in the passport and credit cards from been scanning, protect your private information Slim- Minimalism style, compact, handy for carrying, can be put in jacket pockets, jeans pocket, most various purses and bagsFunctional – most vaccine card holder only fits regular size card 4" x 3", our passport cover can hold large vaccine card 4.25" x 3.5" with unfold Product Feature DIY-Own your unique vaccine card holder, you can add any decal you like on the cover then you got your unique vaccination card case! Safe- Rfid blocking can prevent your data in the passport and credit cards from been scanning, protect your private information Slim- Minimalism style, compact, handy for carrying, can be put in jacket pockets, jeans pocket, most various purses and bagsFunctional – most vaccine card holder only fits regular size card 4" x 3", our passport cover can hold large vaccine card 4.25" x 3.5" with unfold Product Feature DIY-Own your unique vaccine card holder, you can add any decal you like on the cover then you got your unique vaccination card case! Safe- Rfid blocking can prevent your data in the passport and credit cards from been scanning, protect your private information Slim- Minimalism style, compact, handy for carrying, can be put in jacket pockets, jeans pocket, most various purses and bagsFunctional – most vaccine card holder only fits regular size card 4" x 3", our passport cover can hold large vaccine card 4.25" x 3.5" with unfold