Premium Material -- The vaccine protector is made of durable PVC poly vinyl chloride material, wear-resistant and safe, and will not leave creases or break even if folded repeatedly.Waterproof & Dust-proof Design -- Designed with reliable resealable zip closure, easily open and close, keeping water & dust from getting in. Can keep your vaccination card dry and secure, providing more convenience and safety for your travel or work.Clear Protector Window & Hanging Slot -- Our id badge holders have a transparent protective window, for easy reading of barcodes and QR codes without removing the card. Besides, this ID holder designed with dual-use hanging slot/holes, the middle slot for keychain or retractable carabiner reel clip.Wide Application -- This 43 inches is not only suitable for vaccination cards, but also can hold ID cards, credit cards, work cards, business cards, student cards, membership cards, bus cards, cruise cards, luggage tags, and more.100% Satisfaction Service -- This is a very practical and multifunctional that can meet various daily needs. Please check the package content upon receiving these. If you have any question about the product, our customer service is free-hassle for you to resolve.