Amazon.com offers the Vaccine Card Protector 4"×3" CDC Vaccination Card Holder for $3.99
[Card Size]：PLEASE NOTE :Please refer to Linked image 2 to 4.Vaccination card size can vary ,please check measurements before purchasing. The maximum Suitable Vaccination card size is 4" L x 3" W.If you think the card holder(Another Card Size 4 1/4X3 1/2 )doesn’t fit, just flip it over and slide the top underneath and it seals closed.
[Suitable occasion]: Display Vaccination Card at Airlines for Quick Entry.Use and Reuse for a Health Record Keeper .Great for Teachers, Students, Nurses, Office Employees, Doctors, Government Official, Police, Volunteer and More.
[Reusable]：Badge holder with lanyard helps in various cases such as school, festival, event, office, refereeing at sports, year-end party, sightseeing trip, conference, meeting
[Material]: Durable PVC (poly vinyl chloride) material, wear-resistant and corrosion-resistant properties. WATERPROOF, SEALABLE Clear card pouch is made of flexible,Resealable zipper keeps contents safe and dry.
[Design]: Dual-use hanging slot/holes design, the middle slot for lanyard, keychain or retractable carabiner reel clip, the both side holes for the cord/strap/string/thread. Strong and Flexible plastic material. The badge holders will not leave trace, folded and refolded many time. The hanging Slot/holes will not break, distorted many time.