Bought 3 of these collars as we have a magnetic cat door and found that the magnets on the cats collars kept sticking to the ring that fastened them onto the collar. They would not hang down causing the door to stay shut sometimes and confuse the cats! The Staywell collares have a plastic ring to fasten the magnet onto, this works well. The ring is quite substantial, and the collars are safety collars with elastic in them.
Easy to put on and don't come off by themselves which others often do. The only snag with these magnets is they pick up anything containing iron, so I often find one of my cats with a rusty old nail attached to his/her collar. Shame gold isn't magnetic.
Purchased this product as a stand by for my cat. Have the had the original one for over a year now and it still looks like new. Looked at other similar products but they did not appear to be of the same quality.
This collar is exactly what I needed for my cats, as I have a Staywell magnetic cat flap I needed a collar that would support the magnet and be adjustable enough to fit a scrawny cat. I would buy again.