Hey everyone with contactless cards, these PATIKIL RFID blocking sleeves are your secret weapon against digital pickpocketing! The aluminum material creates a Faraday cage effect that blocks scanners from reading your card information without your knowledge. Each sleeve measures 92x62x0.3mm (about 3.62x2.44x0.012 inches), making them ultra-thin so they don't bulk up your wallet. You get 15 sleeves in this pack, which is perfect for protecting all your cards - credit cards, debit cards, ID cards, passports, driver's licenses, anything with RFID or NFC technology. The red color makes them easy to spot in your wallet, and the plastic coating adds durability. The rust-resistant aluminum means these sleeves will last for years without deteriorating. What's great is that they don't interfere with normal card use - when you take the card out of the sleeve, it works perfectly for payments or scanning. The slim design means you can carry them everywhere without noticing the extra protection. In today's world where digital theft is a real concern, having this simple, affordable protection gives you peace of mind whenever you're in crowded places like airports, shopping malls, or public transportation. Your financial security is worth this small investment that could prevent much bigger headaches down the road!