Simply place the car key fob into the bag and you're protected. Prevents thieves from picking up and relaying signals from your key, to shield against break-ins and keyless ignition theft.Our pouch is constructed with premium PU Leather, and two-layers of shielding materials packed in pouch,so it provides signal blocking functions. Suitable for all car brands.Fashionable design with a leather-inspired, our faraday bag key fob protector is waterproof so you don't have to worry about getting wet in the bag on rainy days,but do not suggest for diving or directly into the water.Colour: BlackMaterial: PUSize: 10.5*7CMPackage Contents:2 x Shielding BagAttention:Please make sure your vehicle key is put in to inner layer since only the Inner layer blocks signals.The size of these bags is only designed for car key fob, not suit for mobile phones.keep the interior dry, or it may lose signal-blocking function.Only the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.