Compatible Type: The tag collar holder is specially designed for GPS Tracker. Can be hold on collar for puppies and other small pets.Upgraded Size: It's smaller than most of the other collar holders, suit for Tag collar which width within 3/8 inches. A great gift for your cats and small dogs like Chihuahua.Premium Material: Made of skin-friendly washable soft liquid silicone material. Also provide all-around protection to the from being scratched.Easy to Use: Put the GPS Tracker(not included) into the collar holder, then you can track your pets by using your . The slide-on design can be widely used for , dog collars and anything with a strap.color:Black+pinkMaterial:Silica gelsize:31mmPackage Contents:4 x Collar HolderOnly the above package content, other products are not included.Note: Light reflection 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.