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Signal Blocker Pouch Bag for Car Key FOB&Cell Phone Specifications: Material: oxford fabric Condition: 100% brand new Weigh: 45g Product size: 7.76" x 4.33" Feature: ★ Effectively blocks the signals from auto keyless entry fob - could not open your cars nor start them with key fobs in the pouch and it is closed. ★ Have multfunction,blocks calls, credit card,SMS, Wi-Fi, 4G, bluetooth, RFID, NFC - Blocks & Unblocks in just 5 seconds! ★ This bag for car keys have two pockets ,only inner pocket with signal blocker function,the outer pocket without this function,please cover it after you put into your car key,otherwise can not block signal. ★ ID card, bank card and other IC magnetic card, into the inner bag can prevent degaussing and information leakage. ★ Health guarantee : prevent pregnant women and child from radiation. You can put it in the pillow and sleep without any radiation to your brain. It doesn't affect the alarm clock of your cell phone.