In today's world where digital theft is everywhere, these RFID blocking sleeves are basically essential protection for your cards! You get 20 sleeves in this pack - enough to protect all your credit cards, debit cards, ID cards, even your social security card. They're made from aluminum foil with special RFID blocking technology that creates a shield around your cards, preventing scanners from stealing your information. No more worrying about someone walking past you with a hidden scanner and draining your accounts! The sleeves measure 2.44 x 3.54 inches, which fits pretty much every standard card out there. The silver color is neutral and discreet - works for both men and women. They're tear-resistant, waterproof, and super durable, so they'll last through daily use in your wallet or bag. Super easy to use - just slide your card in and you're protected. Perfect for business travelers, daily commuters, students, really anyone who carries cards with chips in them. Think about it - you're protecting yourself from identity theft and financial fraud for just pennies per sleeve. Peace of mind is priceless, right? These are must-haves in today's digital age, and having 20 means you can protect all your important cards plus share some with family. Don't wait until it's too late - protect your financial information now!