VEVOR multi-functional signal blocking bag. Our faraday bags can block enough of various signals such as call data, bluetooth, Wi-Fi, GPS, RFID and radio signals to prevent tracking and protect your privacy. Made of high quality non-itchy silicone coating, fiberglass and shielding metal fibers, it can withstand high temperatures up to 2000°f, high temperature resistant and splash-proof, and can store large laptops, tablets, cell phones, cards, cash, documents, radios, GPS units and other electronic devices, providing security for your credit cards, passports, cell phones, laptop computers, keychains, bluetooth, GPS devices and more. Color: Black.