This air tag holder (set of 2 colors) works well on my dog's 0.75" dog collar. He doesn't seem to mind it either. He fluffs himself a lot and it hasn't shaken the ait tag loose from this holder. Follow @hi.ralphie on the LTK shopping app for more dog products. He is a 15 pound male Ahih Tzu. He is wearing size S in the collar a and harness. Both the collar and harness can often be found at TJ Maxx, Marshalls and Homegoods for less. LTKunder50 LTKkids LTKfamily