Material: Vaccination card protector is made of PVC. Thick, Sturdy Plastic Sleeve with curved edges featuring lightly textured back and clear front window to keep your health document or valuable collector card damage free. 
Multifunctional: Multi Purpose Use and Reuse for a Health Record Keeper or for Special or Promotional Events, Conventions, Concerts, Festivals, Retreats, Family & School Reunions, Store Tags, Fundraisers, Field Trips, PTA, Transit Bus, VIP Pass and More. 
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. 
Card Size: 4." W X 4.48" L, Inner Dimensions: 3. " W X 4.1 " L. Vaccination Cards can Vary in Size, while most are 3x4 inches…Some are Large and Some are Smaller. Please Confirm your Measurements before ordering. If some CDC cards are slightly larger. No worries, take a scissor and trim the edges. 
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.