Set of 10 Safe Anti Theft RFID Blocking Credit Cards Sleeves Only $19.95/Set ! Functions: 1. Protect your magnetic cards from EMI (Electro Magnetic Interference) damage,which would caused information lost.(This happens a lot if you put your card near your cellphone too often.) 2. Protect your contactless IC cards information from being stolen, including Identity Card, Credit Card, Employee's Card,ect. 3. Protect your contactless IC cards chips from damage by weather and water-resistant. 4. Prevents electronic pick-pocketing. Features: 1. Sleek silver design slides into your wallet, purse or card-holder with ease. 2. Water-resistant, puncture and tear-resistant 3. Can hold credit cards, debit cards, subway cards, driver's license, US resident green cards, etc. 4. Can be used as a special thoughtful gift to family and friends. 7 days money back guarantee. Items returned must be in original condition with no signs of wear. Customer pays return shipping.