ID card, bank card, such as IC magnetism card, putting into the bag can avoid magnetism lost and info leak.
Block Cell Phone Signal - If you dont want to answer the phone, you can put the phone in the pocket of the bag and close it, then the phone will be disconnected.
This bag can also block cell phone GPS signal to prevent tracking, protect your privacy.
Block Car-key Signal - Ensure your cars security system from getting hacked.
Compatible Size: Fits Car-key, Smart Phones like for Apple iPhone 8, iPhone 8 Plus, iPhone X, iPhone 7, iPhone 7 Plus, iPhone 6/6s, iPhone 6 Plus/6s Plus, iPhone 5/5s/5c, iPhone SE; Samsung Galaxy S7/S7Edge, Galaxy S6/6 Edge, Galaxy S5, Galaxy S4, Galaxy Note 5, Note 4,Note 3; HTC One, One 2 (M8); Motorola Droid; LG Optimus and More.