[MADE OF RFID ISOLATION MATERIAL: The special RFID isolation material effectively protects your information while its waterproof and scratch-resistant properties keep your passportdurable and looking new. "RFID SECURITY: Works on 13.56MHz frequency protect your passport credit cards debit cards and ID cards away from fraud scanning. Provides peace of mind when youre traveling." PACK OF 4 PASSPORT SLEEVES: Comes with 4 passport size RFID blocking sleeves can be applied to passport books of various countries. Convenient for your cross-border business or travel. SLIM & LIGHTWEIGT: Extremely thin and light weighing only 3 grams/0.1 oz. Easily fit into your document holder backpack suitcase without adding any burden giving you all-day protection. "EXCLUSIVE DESIGN: Unique pattern design by VULKIT. Black and gold color scheme classic and luxurious wont get confused with other peoples items. A great choice for your travel accessory selection."]