We have ingeniously combined the stress relief toy with the airtag protective cover. When you receive airtag protective covers, you will also get fidget toys. It is recommended that you use it on keys and backpacks. Of course, you can also use it on the pet Dog collar, if your dog likes to reduce pressure with pop bubbles. Not only fun, this # Pop Bubble Fun Airtag Comprehensive Protection Set # provide your airtag with comprehensive protection against shock, dust, scratches and water.