I seem to have bad luck with break-away collars that have plastic buckles but I'm not a fan of the metal buckles. A while ago, I got a collar for my cat, Ying, and couldn't keep it on her for more than five minutes, so I gave up. I have a collar on my kitten Bear, and he doesn't bother it, but when he's playing with my other kitten, it's constantly popping off. Are there any brands that are a bit sturdier? Obviously I don't want to defeat the purpose of a break-away collar, but with these I may as well not bother with a collar at all. My cat Tugs has a good collar that stays on, but the brand has worn off. 0_o Figures...