Petmate ASPEN Alum Id Tube (2-Tone), Medium, Assorted ID Tube is a great way to pass along the pertinent information on your pet should you become separated Compact metal tube unscrews to hide paper containing your name & address inside Metal tube resists the elements, assuring that your pet's information stays safe & dry inside Information can only be accessed by opening the tube, keeping your name & address information private until it's needed No more advertising your name, address, & phone number when you walk your pet