Keep your passport and all your travel documents safe when you are on-the-go. This RFID Blocking Passport Sleeve keeps your passport and all your RFID enabled cards safe from identity theft. Hackerspace Passport not included!Materials: Woven Stainless Steel Cloth, Black Leather; Dimensions: 3.75 x 5.5 x 0.313"Stewart/Stand stainless steel sleeves and wallets block unauthorized transmission from RFID enabled credit cards & IDs.Made with 85%+ post consumer recycled stainless steel.Normal wear and tear will cause the wallet to take on a natural patina over time.