CardNinja Ultra-slim Self Adhesive Credit Card Wallet for Smartphones, Steel Grey;

The patented Card Ninja is the ultimate smartphone accessory! As simply as peeling a sticker, Card Ninja attaches to your phone or case using high strength adhesive and won't come off until you want it to. And you can remove it cleanly without leaving any residue! It also holds its contents super tight: nothing will come out of your Card Ninja, even if you flip your phone over and shake it! Whether you carry a bunch of cards with you for work, or just a few to run errands, the Card Ninja adapts to you. It's made from a special strong and resilient spandex style material so it stretches to accommodate several cards, but shrinks back down when empty or only carrying a card or two. At only 2.5mm thin, the Card Ninja is discreet. Like a Ninja! Made from reinforced elastic material, it is designed to withstand being put into your pocket or purse day after day without wearing. It's also designed to resist tearing from repeatedly inserting and removing your credit cards. The Card Ninja is perfect for quick trips, hiking, biking, the gym or a night on the town! Toss your bulky wallet and switch to Card Ninja for everyday use!