They slide off and if you don't JAM them on, you might lose some stitches. I think I prefer the singular point protectors. But since I have these, I'll keep using them, with caution.
These little point protectors are super! They go really small and up to 10.5. They stay put and are easy to take off. Best of all they are just plain cute!
I recently purchased the Clover Small Point Protectors. I was pleasantly surprised by the lime green color (versus the teal that I saw) that I received. They are "gummy" which helps them to stay on. This also makes them a little hard to get off, but insures they won't fall off in the bag.
I like the small and the large point protectors from Clover. I would recommend them and also purchase more in the future.