PREMIUM QUALITY MATERIAL: This Faraday key pouch is made of carbon fibre textured leather and signal shielding material, which can effectively prevent the key signal from leaking. Reasonable Size:Measuring only 3.15 x 4.5 inches/8 x 11.5 cm, it can easily fit in your pocket as well as backpack and can effectively protect your keys. PROTECTION: This Faraday car key case not only prevents scratch marks and dust from entering, but also has a good waterproof property. BLOCKING SIGNAL: This Faraday car key fob bag can effectively block external RFID, including car key signals, which can prevent your car key signal from being copied and amplified, thus preventing your car from being stole TWO KEY BAGS: Two key bags are included inside one pack of items, you can use one for common use, the other one can prevent your spare keys, and also can be used to give to your family members, it will be a perfect gift with both appearance and function.