Frayed quickly. My cats scratched at these collars until they shredded, which oddly caused them to tighten around their necks.

I bought these less than a month ago and both collars have frayed! I noticed my cats collar was off and I thought my cat had gained weight because the collar was so tight when I tried to put it back on, but now reading the other reviews it was likely because it had shrunk.

The collar tightened dangerously while cat wore it. Had only been on a few weeks and the cat scratched at it because he didn't like it. I think that pulled some threads on the collar and it got tight making it hard for him to breathe though he couldn't actually get it off. Do not use.

Dangerous collar almost strangled my cat. Bought a few weeks ago. The cat scratched at the collar because he didn't like wearing it. Scratching pulled strings in the collar making it tighter and tighter. It could have killed him.

These collars shrunk within one week of wear and had to be replaced. They fit perfectly for the first few days (two fingers could be inserted between collar and neck), never got wet, but each day got smaller and had to be loosened until too tight within 6 days! They were exposed to the cat's natural heat only. Must be made with very poor quality fibers to shrink like this!