Lewis N. Clark RFID-Blocking Passport Holder Case,Black,One Size SECURITY AGAINST RFID SIGNALS - Protects passport from unauthorized scanning KEEPS PERSONAL INFORMATION PRIVATE  Conceals national identity and other personal information LIGHTWEIGHT CONSTRUCTION - Nylon fabric protects your passport from wear and tear and adds virtually no weight to your luggage PERFECT FOR TRAVELERS - Good for traveling through airports, going through customs, boarding a cruise, etc. FITS MOST PASSPORTS  Accommodates the majority of US passports