Lucky Line 91801 Signal Blocking Key & Fob Hider. Extra large 5 3/4" x 3" size holds larger car and truck keys and fob remotes. RFID blocking fabric protects keys and fob remotes from wireless theft and automatic communication with vehicle. Powerful adhesive strip attaches to vehicle and watertight pouch attaches to strip by velcro. Includes key ring to attach to backpacks, bags and purses. Hook and loop flap keeps keys or fob remotes securely inside poach.