※The buy reason:

No.1:Convenient and portable - inner silver layer blocks signals, outer Oxford cloth layer can be used as a normal case - a modern and fashionable design.
No.2:For pregnant women to use mobile phones to avoid cell phone signal radiation.
No.3:Block Cell Phone Signal - If you don't want to answer the phone, you can put the phone in the bag, then the phone will be disconnected; this bag can also block Cell Phone GPS Signal to prevent tracking, protect your privacy.
No.4:Block Car-key FOB Signal - Keep your car's security system from getting hacked.
No.5:Compatible Size: 4.0-6.0 Inch,Fits Car-key FOB, Smart Phones like Apple iPhone 7, iPhone 7 Plus, iPhone 6/6s,, Samsung Galaxy S7/S7Edge,Xiaomi Redmi 3S,HTC One and More.

The product detail↓↓↓

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Have a nice day ^_^