Advanced RFID Shielding Technology The 20pcs colorful RFID blocking sleeves protect credit cards money cards and identification cards from electronic fraud or theft. Crafted with special RFID blocking material they effectively prevent card degaussing and theft brush. As certified secure sleeves for credit cards they guard against scanning of digital and electronic chips by thieves delivering superior travel security. Waterproof Aluminum Construction Featuring aluminum foil waterproof material these RFID credit card protectors boast a smart slim design that fits seamlessly into wallets and travel wallets. The certified secure sleeves womens and mens credit cards and debit cards making life and travel safer and more convenient. Vibrant MultiColor System Multiple brightly colored options let you match credit cards with different color protectors for quick identification. These colorful secure sleeves prevent scanning of digital and electronic chips by thieves ensuring youll never become a victim of hightech crime. SlimProfile Engineering With ultrathin dimensions approx. 9.1x6.3x0.03cm3.58x2.48x0.01in these identity card protectors fit effortlessly into wallets or purses without bulk. Designed for easy insertion of most credit cards bank cards and passports they complement both womens and mens wallets while bringing safety and convenience to daily life and travel. Universal Card Compatibility These RFID secure cases defend against electronic fraud or theft across all protected cards. They effectively prevent card degaussing and theft brush while fitting perfectly into wallets and travel wallets ing essential cards wherever you go.Plain