MATERIAL: lycra, quite stretchy, allows you to store up to 8 cards & cash, earbuds ect. If 8 or more cards have been inserted and then taken out, pls allow at least one night for the loose card holder to recover close to its original size.Using 3M adhesive, COCOFU card holder securely attaches to the back of your device, no extra super glue needed. It removes cleanly too! No residue left. SLIM COMFORT, STRONG ELASTICITY - The COCOFU wallet attachment features durable stick work that ensures the pocket never loses elasticity or stays open when not in use. In fact, it's so thin and compact it won't add bulk or make your phone harder to carry even when in a front pocket, purse or handbags. DOUBLE SECURE, DISCREET DESIGN - These adhesive pockets can also be used as a secret pocket in a personal locker, glove box organizer for parking cards or cash, or even as a hidden compartment for your gym bag.Double Secure with Lid Cover than Regular Attach on Case.

UNIVERSAL ADHESIVE CELLPHONE CARD WALLET: Just stick it firmly on the back of your smart phones, tablets or other devices and you can get a handy wallet. As they are made of , you can put some cash, earphones, keys or about 2-3 cards(such as ID card, credit cards, driver's licence, business cards, metro card, insurance card, discount card, etc) in it. DURABLE DUAL LAYER SOFT CLOTH WALLET STICKER: It is made of high-quality elastic fabric. The strong wallet pouch will keep its shape and cards will not fall out even you flip it over. The dual layer design make you more space to put your items. It is very convenient if you have different things to store. Only 10g will not add so much weight on you devices. CONVENIENT 3M ADHESIVE: With 3M tape, it can easily attaches and provides a strong attachment to the surface of your devices. As it is reusable, you can stick it on other devices immediately after you peel it. When you want to remove the self-adhesive card wallet, just peel it off and it won't leave any residue.