●SIZE: These faraday pouch have a size of 18CM(L) x 11CM(W). They are suitable for mobile phones, wireless entry car keys, room keys, and credit cards. ●Privacy Protection: Reduce your exposure to cellular phone radiation and protect your cell phone from being hacked, tracked, and cloned. ●100% THEFT PREVENTION: Keep your keyless entry and keyless start/stop system protected from theft. ●GIFTS FOR MEN: A great birthday present, Christmas gift, or stocking filler for car fans or security-conscious friends and family. ●HOW TO TEST IT: Place your key or mobile phone inside the pouch and try to open the door, start the engine, or call the phone.