Ac.y.c Credit Card Holder for Back of Phone, Self Adhesive Stick On Credit Phone iPhone Card Holder Wallet (Black) ULTRA SLIM-Ultra slim stylish design.It can securely store cards, money, keys, and other small stuff.Eliminate your wallet by adding this stylish universal pocket to your smartphone.Can hold 3-5 credit cards. FLAP DESIGN-Prevent direct exposure of their private information and prevent card dropping, maximize the security NO RESIDUE -Easy 3M application with sturdy adhesive.Also the imported 3M adhesive leaves no residue on your phone case or phone when removed COMPATIBLE WITH ALL PHONES - Cardly stretchy Phone Pocket sticks to IPhone, Galaxy,and all other smartphones. It also sticks to most cases. IMPORTANT NOTICE: In case that you have glass back phones such as iPhone X, iPhone 8, iPhone 8 plus, iPhone 7 matte black/jet black, iPhone 7 plus matte/jet black, we recommend you to use an appropriate PHONE CASE in order not to have problem due to the adhesive strength.