Put it on your pet's collars, so that each becomes a personalized one. Not only protects your dog from getting lost, but also saves your money for changing a collar. It is more suitable for dogs neck and won't scratch your dogs skin and fur. Easy to put on or take off but will not fall off in daily use. Silent ID tag means no noise. 

Small - Will fit 5/8" wide collars
Large - Will fit 1" wide collars